Clinical Approach to Chest Pain
Pediatric Comprehensive Framework1. Symptom Overview
Understanding the clinical significance and classification of chest pain in children and adolescents
Chest pain is a common presenting complaint in pediatric practice, accounting for approximately 0.3% to 0.6% of emergency department visits in children and representing one of the most frequent reasons for pediatric cardiology referrals. Unlike adults, where chest pain often signals coronary artery disease, pediatric chest pain is overwhelmingly benign in origin. Studies consistently show that fewer than 1% to 2% of children presenting with chest pain have a cardiac etiology. Despite this reassuring statistic, chest pain causes significant anxiety for patients, families, and clinicians alike, making a systematic approach to evaluation essential.
Key Epidemiological Facts
- Peak incidence occurs between ages 12 and 14 years
- Accounts for 650,000 physician visits annually in the United States for ages 10 to 21 years
- Equal gender distribution in younger children; slight female predominance in adolescents
- Cardiac causes identified in fewer than 1% to 2% of cases
- Musculoskeletal causes account for 20% to 30% of cases
- Idiopathic chest pain represents 20% to 45% of cases despite thorough evaluation
Definition
Chest pain in children is defined as any unpleasant sensory or emotional experience localized to the thoracic region, including the anterior chest wall, lateral chest, or back between the neck and upper abdomen. The sensation may arise from structures within or outside the thoracic cavity, including the chest wall, pleura, lungs, heart, pericardium, esophagus, or may be referred from abdominal organs or the spine.
Classification by Duration
| Category | Duration | Common Causes | Clinical Significance |
|---|---|---|---|
| Acute | Less than 48 hours | Trauma, pneumonia, pneumothorax, myocarditis, pericarditis | Requires urgent evaluation if associated with red flags; may indicate serious pathology |
| Subacute | 48 hours to 2 weeks | Post-viral costochondritis, resolving respiratory infection, musculoskeletal strain | Often represents evolving or resolving process; monitor for progression |
| Chronic or Recurrent | Greater than 2 weeks or multiple episodes | Costochondritis, idiopathic chest pain, precordial catch syndrome, psychogenic causes | Usually benign; thorough history often reveals pattern suggesting non-cardiac cause |
Classification by Character
Sharp or Stabbing Pain
Common causes: Precordial catch syndrome, musculoskeletal pain, pleurisy, pneumothorax
Features: Well-localized, often reproducible with palpation or movement, typically brief duration (seconds to minutes)
Clinical implication: Sharp, brief pain that is reproducible on examination is rarely cardiac in origin
Dull, Pressure-like, or Squeezing Pain
Common causes: Gastroesophageal reflux, esophagitis, anxiety, and rarely cardiac ischemia
Features: Often poorly localized, may be substernal, associated with other symptoms
Clinical implication: Requires careful evaluation; in adolescents with risk factors, consider cardiac causes
Classification by Pattern and Timing
| Pattern | Description | Suggests |
|---|---|---|
| Exertional | Occurs during or immediately after physical activity | Cardiac cause (coronary anomaly, hypertrophic cardiomyopathy, arrhythmia), exercise-induced asthma, deconditioning |
| Postprandial | Occurs after eating, often when recumbent | Gastroesophageal reflux disease, esophagitis, esophageal dysmotility |
| Position-dependent | Worsens or improves with specific positions | Pericarditis (improves leaning forward), musculoskeletal pain, pleurisy |
| Respiratory variation | Worsens with deep breathing or coughing | Pleurisy, pneumonia, costochondritis, musculoskeletal pain, pneumothorax |
| Associated with palpitations | Chest discomfort with awareness of heartbeat | Arrhythmia, anxiety or panic disorder, mitral valve prolapse |
| Stress-related | Occurs during periods of emotional stress or anxiety | Psychogenic chest pain, panic attacks, hyperventilation syndrome |
| Nocturnal | Awakens child from sleep | Gastroesophageal reflux disease, asthma, anxiety; nocturnal pain that awakens the child warrants closer evaluation |
Age-Specific Considerations
| Age Group | Common Etiologies | Special Considerations |
|---|---|---|
| Infants and Toddlers (0–3 years) | Respiratory infections, foreign body aspiration, congenital heart disease | Unable to verbalize chest pain; may present with irritability, feeding difficulties, or respiratory distress |
| Preschool (3–5 years) | Respiratory infections, asthma, trauma | Limited ability to localize or describe pain; rely on behavioral observations and parental history |
| School-age (6–11 years) | Musculoskeletal pain, costochondritis, respiratory infections, precordial catch syndrome | Can localize pain but may have difficulty describing quality; psychogenic causes emerge |
| Adolescents (12–18 years) | Musculoskeletal pain, costochondritis, anxiety, precordial catch syndrome, gastroesophageal reflux | Reliable historians; consider substance use, eating disorders, pregnancy; increased anxiety-related presentations |
Key Concept: The Reassuring Reality
In pediatric chest pain, the most common diagnoses are benign: musculoskeletal pain (including costochondritis), idiopathic chest pain, and precordial catch syndrome collectively account for more than 50% of cases. Cardiac causes are rare, representing fewer than 2% of presentations. However, the clinician’s primary responsibility is to identify the small subset of patients who require urgent intervention while providing appropriate reassurance to the majority with benign conditions.
2. Pathophysiology and Mechanisms
Understanding the underlying mechanisms of chest pain in children
Understanding the anatomical origins and neural pathways of chest pain is essential for accurate diagnosis. The thoracic region contains multiple structures capable of generating pain, and the overlap in sensory innervation often makes localization challenging. Pain may arise from somatic structures (chest wall, muscles, ribs), visceral organs (heart, lungs, esophagus), or may be referred from distant sites. In children, the mechanisms underlying chest pain differ from adults primarily because ischemic heart disease is exceedingly rare, shifting the diagnostic focus toward musculoskeletal, respiratory, and psychogenic causes.
Neural Pathways of Chest Pain
| Component | Structure | Function |
|---|---|---|
| Somatic Afferents | Intercostal nerves (T1-T12), phrenic nerve (C3-C5) | Transmit well-localized, sharp pain from chest wall, parietal pleura, diaphragm |
| Visceral Afferents | Vagus nerve, sympathetic chain (T1-T5) | Transmit poorly localized, dull pain from heart, pericardium, esophagus, visceral pleura |
| Spinal Processing | Dorsal horn neurons (T1-T6) | Convergence of somatic and visceral afferents explains referred pain patterns |
| Central Processing | Thalamus, somatosensory cortex, limbic system | Pain perception, emotional response, and modulation; explains psychogenic contributions |
Pain Generation by Anatomical Source
Chest Wall and Musculoskeletal
Structures: Ribs, costochondral junctions, intercostal muscles, pectoralis muscles
Innervation: Intercostal nerves (somatic)
Pain character: Sharp, well-localized, reproducible with palpation or movement
Clinical relevance: Most common source of pediatric chest pain; includes costochondritis and muscle strain
Cardiac and Pericardial
Structures: Myocardium, pericardium, coronary arteries
Innervation: Cardiac sympathetic afferents (T1-T5), vagal afferents
Pain character: Pressure, squeezing, or sharp (pericarditis); may radiate to arm, jaw, back
Clinical relevance: Rare but critical; includes myocarditis, pericarditis, coronary anomalies
Pulmonary and Pleural
Structures: Parietal pleura, airways, lung parenchyma
Innervation: Phrenic nerve (central diaphragm), intercostal nerves (parietal pleura)
Pain character: Sharp, pleuritic (worsens with breathing); may refer to shoulder if diaphragmatic
Clinical relevance: Includes pneumonia, pleurisy, pneumothorax, asthma
Mechanisms by Condition
| Condition | Mechanism of Pain | Clinical Implication |
|---|---|---|
| Costochondritis | Inflammation of costochondral or costosternal junctions leading to localized tenderness; exact etiology often unknown but may follow viral illness or repetitive microtrauma | Reproducible tenderness on palpation is diagnostic; reassurance and anti-inflammatory treatment |
| Precordial Catch Syndrome (Texidor’s Twinge) | Proposed mechanism involves transient irritation of parietal pleura or intercostal muscle spasm; benign and self-limiting | Brief, sharp, localized pain; resolves spontaneously; no treatment needed beyond reassurance |
| Musculoskeletal Strain | Microtrauma to intercostal muscles, pectoralis muscles, or chest wall from physical activity, coughing, or direct trauma | History of precipitating activity; tenderness to palpation; responds to rest and analgesia |
| Gastroesophageal Reflux Disease | Acid reflux irritates esophageal mucosa; esophageal distension activates visceral afferents; convergence with cardiac afferents causes substernal pain | Pain often postprandial or nocturnal; may mimic cardiac pain; trial of acid suppression is diagnostic |
| Asthma and Reactive Airway Disease | Hyperinflation and increased work of breathing strain chest wall muscles; cough-induced muscle fatigue; airway inflammation may cause chest tightness | Often associated with cough, wheeze, dyspnea; may be exercise-induced; responds to bronchodilators |
| Pneumonia and Pleurisy | Infection causes inflammation of parietal pleura; movement of inflamed pleural surfaces during respiration generates sharp, pleuritic pain | Fever, cough, respiratory distress; pleuritic quality (worse with breathing); requires antimicrobial treatment |
| Pericarditis | Inflammation of pericardium (often post-viral) stimulates phrenic and intercostal nerve afferents; pain typically sharp, positional | Improves leaning forward; may have friction rub; ECG shows diffuse ST elevation; echocardiogram assesses for effusion |
| Myocarditis | Viral or immune-mediated inflammation of myocardium; may cause ischemia through coronary microvascular dysfunction; ventricular dysfunction causes symptoms | Often preceded by viral illness; may have heart failure symptoms; elevated troponin; abnormal echocardiogram |
| Coronary Artery Anomalies | Anomalous origin (especially left coronary from right sinus with interarterial course) causes compression during exercise; results in myocardial ischemia | Exertional chest pain, syncope, or sudden death in otherwise healthy young athletes; requires advanced imaging |
| Hypertrophic Cardiomyopathy | Myocardial hypertrophy causes increased oxygen demand, diastolic dysfunction, and potentially outflow obstruction; may cause ischemia despite normal coronaries | Exertional symptoms, family history of sudden death, murmur that increases with Valsalva; echocardiography is diagnostic |
| Arrhythmias | Tachyarrhythmias increase myocardial oxygen demand; rapid rates reduce diastolic filling; may cause chest discomfort or awareness of heartbeat | Palpitations, dizziness; ECG or Holter monitor to capture rhythm; common arrhythmias include SVT and premature beats |
| Anxiety and Hyperventilation | Hyperventilation causes respiratory alkalosis, leading to coronary vasoconstriction and chest wall muscle fatigue; central sensitization amplifies pain perception | Associated with other somatic complaints, school stress; reproducing symptoms with voluntary hyperventilation may be diagnostic |
| Pneumothorax | Air in pleural space causes lung collapse; stretching of parietal pleura generates acute pain; large pneumothorax causes respiratory compromise | Sudden onset, dyspnea; consider in tall, thin adolescents (primary) or those with underlying lung disease or trauma (secondary) |
Often Overlooked Mechanism: Referred Pain
Due to the convergence of visceral and somatic afferents at the spinal cord level, pain from abdominal organs can be perceived as chest pain. In children, conditions such as cholecystitis, pancreatitis, subdiaphragmatic abscess, and even constipation can present with chest discomfort. Always consider referred pain when thoracic evaluation is unrevealing, particularly if abdominal symptoms are present or the pain is lower thoracic in location.
Developmental Considerations in Pain Perception
| Age Group | Pain Perception and Expression | Clinical Implication |
|---|---|---|
| Infants | Cannot verbalize pain; express through crying, facial grimacing, irritability, feeding refusal | Rely on behavioral cues and parental observation; any infant with unexplained distress warrants thorough evaluation |
| Toddlers and Preschoolers | Limited vocabulary for pain description; may point to general area; may use terms like “owie” or “hurt” | Use developmentally appropriate pain scales; accept imprecise localization; observe for guarding behavior |
| School-age Children | Can localize and rate pain intensity; may describe quality with prompting; beginning to understand cause and effect | Use visual analog or faces scales; ask open-ended questions; may still have difficulty with abstract descriptors |
| Adolescents | Adult-like pain description; can provide detailed history; may minimize or exaggerate based on psychosocial factors | Reliable historians; assess for anxiety, depression, substance use; consider confidential interview |
Why Cardiac Causes Are Rare in Children
Understanding the Pediatric Advantage
Unlike adults, children do not have decades of atherosclerotic disease burden. The conditions that cause cardiac chest pain in children are fundamentally different:
- Coronary atherosclerosis: Virtually absent except in rare conditions (familial hypercholesterolemia, post-Kawasaki disease)
- Structural anomalies: Congenital coronary anomalies are the most common cardiac cause of exertional chest pain
- Inflammatory conditions: Myocarditis and pericarditis are more common than ischemic disease
- Cardiomyopathies: Hypertrophic cardiomyopathy may cause ischemia through supply-demand mismatch
- Arrhythmias: Tachyarrhythmias may cause chest discomfort without structural disease
The rarity of cardiac disease in pediatric chest pain allows for a more conservative diagnostic approach, but the clinician must remain vigilant for the warning signs that suggest the rare but serious cardiac condition.
3. History Taking
A comprehensive approach to eliciting the chest pain history in children and adolescents
Red Flags — Require Urgent Evaluation
- Exertional chest pain — suggests cardiac ischemia, coronary anomaly, or hypertrophic cardiomyopathy
- Syncope or near-syncope — may indicate arrhythmia, outflow obstruction, or coronary anomaly
- Palpitations with chest pain — suggests arrhythmia as underlying cause
- Family history of sudden cardiac death — increases risk of inherited cardiac conditions
- Known congenital heart disease — cardiac etiology more likely
- Fever with chest pain — suggests pericarditis, myocarditis, or pneumonia
- Acute onset with dyspnea — consider pneumothorax, pulmonary embolism, or cardiac emergency
- History of Kawasaki disease — risk of coronary artery aneurysm and stenosis
- Marfan syndrome features — risk of aortic root dilation and dissection
- Recent cocaine or stimulant use — can cause coronary vasospasm or arrhythmia
- Pain radiating to arm, jaw, or back — classic pattern of cardiac ischemia or aortic pathology
Systematic History: The “CHEST PAIN” Approach
Use the mnemonic “CHEST PAIN” to ensure comprehensive history taking in pediatric chest pain:
- C — Character and Chronology: What does the pain feel like? When did it start? How long does each episode last? Is it constant or intermittent?
- H — History of precipitants: What were you doing when the pain started? Does exercise, eating, breathing, or stress trigger it?
- E — Exertional symptoms: Does the pain occur during or after physical activity? Any syncope, near-syncope, or palpitations with exertion?
- S — Site and Spread: Where exactly is the pain? Can you point with one finger? Does it radiate anywhere?
- T — Timing and Triggers: What time of day does it occur? What makes it worse? What makes it better?
- P — Past medical and family history: Any heart problems, Kawasaki disease, or connective tissue disorders? Family history of sudden death, cardiomyopathy, or arrhythmias?
- A — Associated symptoms: Any fever, cough, shortness of breath, palpitations, dizziness, nausea, or vomiting?
- I — Impact on life: Does it affect school, sports, sleep, or daily activities? How worried is the child/family?
- N — New medications or substances: Any new medications? Caffeine, energy drinks, or illicit substances (in adolescents)?
Targeted Questions by Suspected Cause
| Suspected Cause | Key Features | Ask This Question |
|---|---|---|
| Costochondritis | Sharp, localized pain at costochondral junction; reproducible with palpation | “Can you point with one finger where it hurts? Does pressing on that spot make it worse?” |
| Precordial Catch Syndrome | Sudden, brief, sharp pain; worse with inspiration; resolves spontaneously | “Does the pain come on suddenly and last only a few seconds to minutes? Does taking a deep breath make it worse?” |
| Musculoskeletal Strain | History of physical activity, trauma, or repetitive motion; localized tenderness | “Have you been doing any new sports, exercises, or heavy lifting? Did you hurt yourself or fall recently?” |
| Gastroesophageal Reflux Disease | Burning substernal pain; worse after eating or lying down; associated with regurgitation | “Is the pain worse after eating or when you lie down? Do you ever taste food or acid coming back up?” |
| Asthma or Reactive Airway Disease | Chest tightness with cough, wheeze, or dyspnea; exercise-induced or triggered by allergens | “Do you have any coughing, wheezing, or trouble breathing with the chest pain? Does it happen when you run or exercise?” |
| Anxiety or Panic Disorder | Associated with stress, school issues; hyperventilation; multiple somatic complaints | “Is there anything stressful happening at school or home? Do you feel your heart racing or have trouble catching your breath when you’re anxious?” |
| Pericarditis | Sharp pain worse when lying flat; improves leaning forward; may follow viral illness | “Is the pain worse when you lie flat and better when you sit up and lean forward? Have you been sick with a cold or flu recently?” |
| Myocarditis | Chest pain with fatigue, dyspnea, decreased exercise tolerance; often post-viral | “Have you been feeling more tired than usual? Are you getting short of breath doing things that were easy before? Any recent illness?” |
| Cardiac Ischemia (Coronary Anomaly, Hypertrophic Cardiomyopathy) | Exertional pain, syncope, palpitations; family history of sudden death | “Does the pain happen when you’re playing sports or exercising hard? Have you ever fainted or felt like you were going to faint during exercise?” |
| Arrhythmia | Palpitations, rapid heartbeat, dizziness; may occur at rest or with activity | “Does your heart ever feel like it’s racing, skipping beats, or pounding? Can you tap out what the rhythm feels like?” |
| Pneumonia | Fever, cough, pleuritic pain; respiratory distress | “Do you have a fever or cough? Does it hurt more when you take a deep breath or cough?” |
| Pneumothorax | Sudden onset of sharp pain and dyspnea; tall, thin body habitus; history of lung disease | “Did the pain start very suddenly? Did you feel short of breath at the same time it started?” |
Pediatric-Specific History Elements
Birth and Developmental History
| Element | Relevance to Chest Pain | Key Questions |
|---|---|---|
| Prenatal History | Maternal infections or medications may affect cardiac development | “Were there any problems during the pregnancy?” |
| Birth History | Prematurity associated with chronic lung disease; perinatal hypoxia may cause cardiac issues | “Was your child born early? Any problems at birth requiring oxygen or intensive care?” |
| Developmental Milestones | Delays may suggest underlying syndrome with cardiac involvement | “Has your child met all developmental milestones on time?” |
| Growth Trajectory | Failure to thrive may indicate chronic cardiac or pulmonary disease | “Has your child been growing well? Any concerns about weight gain?” |
Family History
Critical Family History Questions
A thorough family history is essential in pediatric chest pain evaluation. Ask specifically about:
- Sudden unexplained death in family members under age 50, especially during exercise or sleep
- Known cardiomyopathy (hypertrophic, dilated, or arrhythmogenic)
- Long QT syndrome or other inherited arrhythmia syndromes
- Marfan syndrome or other connective tissue disorders
- Congenital heart disease
- Early coronary artery disease (males under 55, females under 65)
- History of pacemaker or implantable defibrillator in young relatives
- Unexplained drowning, single-car accidents, or sudden infant death syndrome
Medication and Social History
Medications and Substances That May Cause Chest Pain
- Stimulant medications (methylphenidate, amphetamines) — may cause palpitations, chest discomfort, hypertension
- Caffeine and energy drinks — tachycardia, palpitations, chest tightness
- Cocaine and methamphetamine — coronary vasospasm, arrhythmia, myocardial infarction (in adolescents)
- Cannabis — tachycardia, anxiety, rarely coronary vasospasm
- Oral contraceptives — increased risk of venous thromboembolism and pulmonary embolism
- Chemotherapy agents (anthracyclines) — cardiotoxicity, cardiomyopathy
- Nonsteroidal anti-inflammatory drugs — gastritis, esophagitis presenting as chest pain
- Inhaled corticosteroids — may cause esophageal candidiasis with chest discomfort
Social and Lifestyle History
- Sports and physical activity: Type, intensity, competitive level; any limitations noticed
- School performance: Academic stress, bullying, attendance issues related to symptoms
- Sleep patterns: Sleep quality, nocturnal symptoms, sleep position
- Diet: Eating habits, timing of meals, carbonated beverages, spicy foods
- Substance use (adolescents): Tobacco, vaping, alcohol, illicit drugs — ask confidentially
- Mental health: Anxiety, depression, panic attacks, recent stressors
- Screen time: Prolonged sitting posture may contribute to musculoskeletal pain
- Recent travel: May be relevant for infectious causes or pulmonary embolism risk
Adolescent Confidential Interview
HEADSS Assessment in Adolescents
For adolescents, conduct part of the interview confidentially using the HEADSS framework to uncover psychosocial factors that may contribute to chest pain:
- Home environment and relationships
- Education and employment
- Activities, peers, and hobbies
- Drugs, alcohol, and tobacco
- Sexuality and relationships
- Suicide, depression, and self-harm screening
Many adolescents with chest pain have underlying anxiety, depression, or stressors that they may not disclose in front of parents.
4. Physical Examination
A systematic head-to-toe approach for chest pain in children and adolescents
Systematic Framework: Use the “Head to Extremities” approach for complete examination of pediatric patients presenting with chest pain. Remember that the physical examination in pediatric chest pain is often normal, but a thorough examination helps exclude serious pathology and provides reassurance.
General Inspection
- Appearance: Does the child appear well, ill, or in distress? Comfortable at rest or anxious?
- Body habitus: Tall and thin (Marfan syndrome, pneumothorax risk), obesity (deconditioning, sleep apnea)
- Respiratory effort: Tachypnea, use of accessory muscles, nasal flaring, retractions, tripod positioning
- Color: Pallor, cyanosis (central vs peripheral), mottling
- Dysmorphic features: May suggest genetic syndrome with cardiac involvement (Turner, Noonan, Williams, Marfan)
- Posture: Leaning forward (pericarditis), guarding of chest
- Behavior: Level of distress, interaction with parents, anxiety
Vital Signs
Vital signs must be interpreted using age-appropriate normal ranges. Abnormalities may provide important clues to the underlying etiology.
Pediatric Normal Vital Sign Ranges by Age
| Age | Heart Rate (beats per minute) | Respiratory Rate (breaths per minute) | Systolic Blood Pressure (mmHg) |
|---|---|---|---|
| Infant (0–12 months) | 100–160 | 30–60 | 70–100 |
| Toddler (1–3 years) | 90–150 | 24–40 | 80–110 |
| Preschool (3–5 years) | 80–140 | 22–34 | 80–110 |
| School-age (6–11 years) | 70–120 | 18–30 | 85–120 |
| Adolescent (12–18 years) | 60–100 | 12–20 | 100–130 |
Vital Sign Abnormalities and Their Significance
| Vital Sign | Abnormality | Clinical Significance |
|---|---|---|
| Temperature | Fever (≥38°C or 100.4°F) | Suggests infectious or inflammatory cause: pneumonia, pericarditis, myocarditis |
| Heart Rate | Tachycardia beyond age-normal range | May indicate fever, anxiety, pain, anemia, hypovolemia, arrhythmia, heart failure, or hyperthyroidism |
| Heart Rate | Bradycardia or irregular rhythm | Consider heart block, sick sinus syndrome, or other arrhythmia |
| Blood Pressure | Hypertension | May be associated with stimulant use, pain, anxiety, or coarctation of the aorta (check four-limb pressures) |
| Blood Pressure | Hypotension or narrow pulse pressure | Concerning for cardiac tamponade, severe myocarditis, or cardiogenic shock |
| Blood Pressure | Differential between arms or arm-leg gradient | Suggests coarctation of the aorta or aortic pathology |
| Respiratory Rate | Tachypnea | May indicate pulmonary pathology (pneumonia, pneumothorax), heart failure, or anxiety/hyperventilation |
| Oxygen Saturation | Hypoxia (SpO2 <95% on room air) | Suggests pulmonary pathology, severe cardiac disease with shunting, or pulmonary embolism |
Growth Parameters
- Height and weight: Plot on growth chart; failure to thrive may indicate chronic cardiac or pulmonary disease
- Body mass index: Obesity associated with deconditioning, gastroesophageal reflux, sleep apnea
- Arm span to height ratio: If arm span exceeds height by >5%, consider Marfan syndrome
Head, Eyes, and Neck Examination
Head and Face
- Facial features: Dysmorphism suggesting genetic syndrome
- Malar flush: May indicate mitral stenosis (rare in children)
- High-arched palate: Marfan syndrome
- Dental abnormalities: May be associated with congenital syndromes
Eyes
- Lens dislocation (ectopia lentis): Marfan syndrome or homocystinuria
- Blue sclerae: Osteogenesis imperfecta, Ehlers-Danlos syndrome
- Conjunctival pallor: Anemia
Neck
- Jugular venous distension: Elevated in heart failure, cardiac tamponade, tension pneumothorax
- Tracheal position: Deviation suggests pneumothorax, large pleural effusion, or mediastinal mass
- Thyroid: Enlargement may indicate hyperthyroidism causing palpitations
- Lymphadenopathy: May suggest infectious etiology
- Webbed neck: Turner syndrome (coarctation, bicuspid aortic valve)
Chest Wall Examination
The chest wall examination is critical in pediatric chest pain, as musculoskeletal causes are the most common etiology.
Inspection
- Chest symmetry: Asymmetry may indicate scoliosis, pneumothorax, or mass
- Pectus excavatum or carinatum: May be associated with Marfan syndrome or connective tissue disorders
- Skin changes: Bruising or abrasions (trauma), herpes zoster rash
- Visible pulsations: Hyperdynamic precordium may indicate volume or pressure overload
Palpation
Key Point: Reproducible Tenderness
If the patient’s presenting pain can be reproduced by palpation of the chest wall, a musculoskeletal cause is highly likely. Systematically palpate the sternum, costochondral junctions, ribs, and paraspinal muscles to identify the tender area. Have the child indicate if the reproduced pain is “the same” as their presenting complaint.
- Costochondral junctions: Tenderness suggests costochondritis (commonly at 2nd–5th ribs)
- Sternum: Sternal tenderness; assess for crepitus (fracture)
- Ribs: Point tenderness may indicate fracture or muscle strain
- Intercostal muscles: Tenderness with strain or viral myositis
- Xiphoid process: Xiphodynia (tender xiphoid) can cause epigastric or lower chest pain
- Paraspinal muscles: Tenderness may indicate referred musculoskeletal pain
Respiratory Examination
Inspection
- Respiratory pattern: Rate, depth, regularity; use of accessory muscles
- Chest expansion: Symmetric vs asymmetric (reduced on affected side in pneumothorax, effusion)
- Retractions: Subcostal, intercostal, or suprasternal (indicates increased work of breathing)
Percussion
- Hyperresonance: Pneumothorax, severe asthma with air trapping
- Dullness: Consolidation (pneumonia), pleural effusion, hemothorax
Auscultation
| Finding | Description | Conditions |
|---|---|---|
| Normal breath sounds | Vesicular sounds bilaterally | Most causes of pediatric chest pain have normal lung examination |
| Wheezes | High-pitched, musical sounds; usually expiratory | Asthma, reactive airway disease, foreign body (unilateral wheeze) |
| Crackles (rales) | Discontinuous, bubbling sounds; inspiratory | Pneumonia, pulmonary edema (heart failure), atelectasis |
| Decreased or absent breath sounds | Reduced air entry unilaterally or bilaterally | Pneumothorax, large pleural effusion, severe asthma, mucus plugging |
| Pleural friction rub | Grating sound synchronous with respiration | Pleurisy, pneumonia with pleural involvement |
| Stridor | High-pitched inspiratory sound | Upper airway obstruction; less common cause of chest pain |
Cardiovascular Examination
A thorough cardiovascular examination is essential even though cardiac causes are rare in pediatric chest pain.
Inspection and Palpation
- Point of maximal impulse: Normally at 4th–5th intercostal space, midclavicular line; displacement suggests cardiomegaly
- Precordial activity: Hyperdynamic impulse may indicate volume overload or anemia
- Thrills: Palpable vibration indicates grade 4 or higher murmur
- Heaves or lifts: Right ventricular heave (pulmonary hypertension), left ventricular lift (hypertrophy)
Auscultation
| Finding | Description | Conditions |
|---|---|---|
| Normal heart sounds | S1 and S2 with normal splitting | Most pediatric chest pain; normal finding in benign causes |
| Pericardial friction rub | Scratchy, high-pitched sound; best heard with patient leaning forward | Pericarditis (pathognomonic when present, but may be absent) |
| Muffled heart sounds | Distant, quiet heart sounds | Pericardial effusion, cardiac tamponade, obesity |
| Gallop rhythm (S3) | Low-pitched third heart sound in early diastole | May indicate heart failure, myocarditis, dilated cardiomyopathy |
| S4 (fourth heart sound) | Late diastolic sound; indicates stiff ventricle | Hypertrophic cardiomyopathy, hypertension |
| Systolic ejection murmur | Crescendo-decrescendo murmur at left upper sternal border | Innocent murmur (Still’s murmur) vs pathologic (aortic stenosis, hypertrophic cardiomyopathy) |
| Harsh systolic murmur at LLSB that increases with Valsalva | Crescendo-decrescendo quality | Hypertrophic obstructive cardiomyopathy |
| Mid-systolic click | Sharp, high-pitched sound in mid-systole | Mitral valve prolapse |
| Continuous murmur | Murmur throughout systole and diastole | Patent ductus arteriosus, arteriovenous malformation, venous hum (innocent) |
Abdominal Examination
- Epigastric tenderness: May indicate gastroesophageal reflux disease, gastritis, peptic ulcer disease
- Right upper quadrant tenderness: Cholecystitis can present as right-sided chest pain (referred)
- Hepatomegaly: May indicate right heart failure, hepatic congestion
- Splenomegaly: Consider infectious mononucleosis (may have associated myocarditis)
- Abdominal distension: Constipation can cause referred chest discomfort in children
Extremities and Skin
- Digital clubbing: Suggests chronic hypoxia from cyanotic heart disease, chronic lung disease, or cystic fibrosis
- Peripheral edema: May indicate heart failure, though uncommon presentation in children
- Peripheral pulses: Check femoral pulses; weak or delayed femorals suggest coarctation of the aorta
- Capillary refill: Delayed (>2 seconds) suggests poor perfusion
- Arachnodactyly: Long, thin fingers and toes suggest Marfan syndrome (wrist and thumb signs)
- Joint hypermobility: Ehlers-Danlos syndrome and other connective tissue disorders
- Skin: Striae (Marfan syndrome), café-au-lait spots (neurofibromatosis), skin elasticity (Ehlers-Danlos)
- Calf tenderness or swelling: Consider deep vein thrombosis and pulmonary embolism risk (adolescents)
Expected Findings by Etiology
| Condition | General | Chest Wall | Cardiovascular | Respiratory |
|---|---|---|---|---|
| Costochondritis | Well-appearing | Reproducible tenderness at costochondral junctions | Normal | Normal |
| Precordial Catch | Well-appearing | Usually non-tender | Normal | Normal |
| Musculoskeletal Strain | Well-appearing | Localized tenderness, worse with movement | Normal | Normal |
| Anxiety/Hyperventilation | Anxious, tachypneic | May have diffuse tenderness | Tachycardia | Normal or hyperventilation pattern |
| Asthma | May have respiratory distress | Normal or diffuse chest tightness | Tachycardia | Wheezes, prolonged expiration |
| Pneumonia | Febrile, ill-appearing | May have splinting | Tachycardia | Crackles, decreased breath sounds, dullness |
| Pneumothorax | Acute distress, dyspneic | Asymmetric expansion | Tachycardia, possible hypotension | Decreased breath sounds, hyperresonance |
| Pericarditis | May appear uncomfortable | Normal | Friction rub, muffled sounds, tachycardia | Normal |
| Myocarditis | Fatigued, ill-appearing | Normal | Tachycardia, gallop, hypotension | May have crackles (pulmonary edema) |
| Hypertrophic Cardiomyopathy | Often well-appearing | Normal | Systolic murmur (increases with Valsalva) | Normal |
Important Teaching Point
Normal examination is common! The majority of children presenting with chest pain—including those with costochondritis, precordial catch syndrome, gastroesophageal reflux disease, and anxiety-related chest pain—will have an entirely normal physical examination or only chest wall tenderness. A normal cardiovascular and respiratory examination does not exclude all serious pathology but is highly reassuring when combined with a benign history. The key is to identify the minority with red flag symptoms or abnormal examination findings who require further investigation.
5. Differential Diagnosis
Systematic approach organized by probability and clinical features in pediatric chest pain
The differential diagnosis of chest pain in children differs substantially from adults. While adults presenting with chest pain require urgent evaluation for acute coronary syndrome, children rarely have ischemic heart disease. The vast majority of pediatric chest pain is benign, with musculoskeletal causes, idiopathic pain, and respiratory conditions accounting for most cases. However, the clinician must systematically consider and exclude the rare but serious cardiac, pulmonary, and other life-threatening causes.
Key Principle: Probability-Based Thinking
When evaluating pediatric chest pain, consider diagnoses in order of likelihood:
- Common causes (approximately 85-90%): Musculoskeletal, idiopathic, respiratory, gastrointestinal, psychogenic
- Less common causes (approximately 8-12%): Specific musculoskeletal conditions, cardiac arrhythmias, less typical presentations
- Rare but serious causes (approximately 1-2%): Structural cardiac disease, myocarditis, pericarditis, coronary anomalies, pulmonary embolism
Acute Chest Pain (Duration: Less than 48 hours)
| Probability | Condition | Key Features | Red Flags |
|---|---|---|---|
| COMMON (~70%) | Musculoskeletal strain | History of activity or trauma; localized tenderness; worse with movement | None typically |
| Viral respiratory infection | Cough, coryza, fever; chest tightness or pain from coughing | High fever, respiratory distress | |
| Asthma exacerbation | Known asthma; wheezing, cough, dyspnea; chest tightness | Severe distress, hypoxia, silent chest | |
| Precordial catch syndrome | Sudden, sharp, brief pain; worse with inspiration; resolves spontaneously | None | |
| Anxiety or panic attack | Associated with stress; hyperventilation; multiple somatic symptoms | None typically | |
| LESS COMMON (~20%) | Pneumonia | Fever, cough, pleuritic pain; crackles on examination | High fever, hypoxia, respiratory distress |
| Pleurisy | Sharp pain worse with breathing; may follow viral illness | Fever, dyspnea | |
| Gastroesophageal reflux disease | Burning substernal pain; worse after eating or lying down | Dysphagia, weight loss | |
| Trauma (rib contusion or fracture) | Clear history of injury; point tenderness; pain with breathing | Severe pain, respiratory compromise | |
| UNCOMMON BUT SERIOUS (~10%) | Pneumothorax | Sudden onset; dyspnea; decreased breath sounds; tall, thin habitus | Severe dyspnea, hypoxia, hypotension (tension) |
| Pericarditis | Sharp pain, worse lying flat, better leaning forward; recent viral illness | Fever, friction rub, hemodynamic instability | |
| Myocarditis | Chest pain with fatigue, dyspnea; often post-viral; may have heart failure signs | Tachycardia, gallop, hypotension, arrhythmia | |
| Arrhythmia | Palpitations, rapid heartbeat; may be at rest or exertional | Syncope, hemodynamic compromise | |
| Pulmonary embolism | Acute dyspnea, pleuritic pain; risk factors (oral contraceptives, immobility) | Hypoxia, tachycardia, hemoptysis | |
| Cardiac ischemia (coronary anomaly) | Exertional chest pain or syncope in young athlete | Exertional syncope, family history of sudden death |
Chronic or Recurrent Chest Pain (Duration: Greater than 2 weeks)
Step-by-Step Approach to Chronic Pediatric Chest Pain:
- Step 1: Identify red flags — exertional symptoms, syncope, family history of sudden death, known heart disease
- Step 2: Assess for reproducible chest wall tenderness — if present, musculoskeletal cause is highly likely
- Step 3: Consider the “Common Five” — costochondritis, precordial catch, musculoskeletal strain, anxiety, and idiopathic
- Step 4: Evaluate for gastrointestinal and respiratory causes if above are excluded
- Step 5: Consider cardiac evaluation only if red flags present or initial workup unrevealing
| Probability | Condition | Approximate Frequency | Key Distinguishing Features |
|---|---|---|---|
| COMMON | Costochondritis | 10-30% | Reproducible tenderness at costochondral junctions; no swelling (unlike Tietze syndrome) |
| Idiopathic chest pain | 20-45% | No identifiable cause despite thorough evaluation; diagnosis of exclusion | |
| Precordial catch syndrome | 10-20% | Brief, sharp, localized pain; worse with inspiration; resolves spontaneously in seconds to minutes | |
| Musculoskeletal pain | 15-30% | Related to activity, posture, or strain; reproducible with palpation or movement | |
| Anxiety and psychogenic pain | 5-15% | Associated with stress, school issues; hyperventilation; multiple somatic complaints | |
| LESS COMMON | Asthma or exercise-induced bronchoconstriction | 5-10% | Chest tightness with exertion; associated cough or wheeze; responds to bronchodilators |
| Gastroesophageal reflux disease | 2-8% | Burning substernal pain; worse postprandially or supine; responds to acid suppression | |
| Slipping rib syndrome | 1-2% | Pain at lower costal margin; “clicking” or “popping” sensation; positive hooking maneuver | |
| Tietze syndrome | <1% | Costochondritis with visible swelling; usually single costochondral junction affected | |
| UNCOMMON BUT SERIOUS | Hypertrophic cardiomyopathy | <1% | Exertional symptoms; family history; systolic murmur increasing with Valsalva |
| Coronary artery anomalies | <1% | Exertional chest pain or syncope; may be only symptom before sudden death | |
| Arrhythmias (supraventricular tachycardia, long QT syndrome) | <1% | Palpitations; may cause chest discomfort during episodes; family history | |
| Aortic stenosis | <1% | Exertional symptoms; systolic ejection murmur at right upper sternal border | |
| Post-Kawasaki coronary disease | <1% | History of Kawasaki disease; may have coronary aneurysms or stenosis |
Anatomical Approach to Differential Diagnosis
Chest Wall (Most Common)
Costochondritis
Precordial catch syndrome
Musculoskeletal strain
Rib fracture or contusion
Slipping rib syndrome
Tietze syndrome
Herpes zoster
Cardiac (Rare but Critical)
Pericarditis
Myocarditis
Coronary artery anomalies
Hypertrophic cardiomyopathy
Arrhythmias
Aortic stenosis
Mitral valve prolapse
Kawasaki disease sequelae
Pulmonary
Asthma and reactive airway disease
Pneumonia
Pleurisy
Pneumothorax
Pulmonary embolism
Foreign body aspiration
Cystic fibrosis
Gastrointestinal and Other
Gastroesophageal reflux disease
Esophagitis
Esophageal spasm
Foreign body ingestion
Anxiety and panic disorder
Sickle cell crisis (acute chest syndrome)
Referred abdominal pain
Age-Based Differential Considerations
| Age Group | More Likely Diagnoses | Special Considerations |
|---|---|---|
| Infants (0-12 months) | Respiratory infection, congenital heart disease, foreign body aspiration | Cannot verbalize pain; present with irritability, feeding difficulty, respiratory distress |
| Toddlers (1-3 years) | Respiratory infection, asthma, foreign body aspiration, trauma | Limited localization of pain; consider accidental and non-accidental trauma |
| Preschool (3-5 years) | Respiratory infection, asthma, musculoskeletal pain | Beginning to localize and describe pain; may dramatize or minimize |
| School-age (6-11 years) | Musculoskeletal causes, costochondritis, precordial catch, asthma, anxiety | Can provide reliable history; school stress may contribute to psychogenic pain |
| Adolescents (12-18 years) | Musculoskeletal, costochondritis, precordial catch, anxiety, gastroesophageal reflux | Consider substance use, eating disorders; pulmonary embolism risk with oral contraceptives; sports-related cardiac concerns |
Drug-Induced and Substance-Related Chest Pain
| Substance or Drug Class | Mechanism | Characteristics | Management |
|---|---|---|---|
| Stimulant medications (methylphenidate, amphetamines) | Increased heart rate and blood pressure; potential for arrhythmia | Palpitations, chest tightness; dose-related | Consider dose reduction or medication change; cardiac evaluation if persistent |
| Caffeine and energy drinks | Tachycardia, increased myocardial oxygen demand; anxiety | Palpitations, chest discomfort; often with anxiety symptoms | Eliminate or reduce caffeine intake |
| Cocaine | Coronary vasospasm; increased myocardial oxygen demand; direct cardiotoxicity | Can cause true myocardial ischemia or infarction even in young patients | Emergent evaluation; benzodiazepines; avoid beta-blockers |
| Cannabis | Tachycardia; rarely coronary vasospasm; anxiety | Usually associated with anxiety; rarely true cardiac events | Supportive care; evaluate if concerning features |
| Electronic cigarettes and vaping | Nicotine effects; potential for e-cigarette or vaping product use-associated lung injury (EVALI) | Chest pain, dyspnea, cough; may have pulmonary infiltrates | Chest imaging; supportive care; consider EVALI if respiratory symptoms |
| Oral contraceptives | Increased risk of venous thromboembolism and pulmonary embolism | Acute pleuritic chest pain, dyspnea; may have leg swelling | Evaluate for pulmonary embolism with appropriate imaging |
| Nonsteroidal anti-inflammatory drugs | Gastric mucosal irritation; esophagitis | Epigastric or substernal burning; worse with empty stomach | Discontinue or take with food; consider acid suppression |
| Chemotherapy (anthracyclines) | Direct cardiotoxicity; cardiomyopathy | May present months to years after treatment; heart failure symptoms | Echocardiography; cardiology referral |
Quick Reference: “If You See This, Think This First”
| Clinical Clue | Think This First | Next Step |
|---|---|---|
| Reproducible tenderness at costochondral junction | Costochondritis | Reassurance; nonsteroidal anti-inflammatory drugs if needed |
| Brief, sharp pain worse with inspiration, resolves spontaneously | Precordial catch syndrome | Reassurance; no workup needed |
| Exertional chest pain or syncope in young athlete | Hypertrophic cardiomyopathy or coronary anomaly | ECG, echocardiogram; restrict activity until cleared |
| Chest pain with palpitations | Arrhythmia | ECG; consider Holter monitor or event recorder |
| Sharp pain worse lying flat, better leaning forward | Pericarditis | ECG, echocardiogram, inflammatory markers |
| Chest pain with fatigue and dyspnea after viral illness | Myocarditis | ECG, troponin, echocardiogram; urgent cardiology referral |
| Sudden onset with dyspnea in tall, thin adolescent | Pneumothorax | Chest radiograph; if tension features, immediate decompression |
| Fever, cough, pleuritic pain | Pneumonia | Chest radiograph; appropriate antimicrobials |
| Burning substernal pain worse after eating | Gastroesophageal reflux disease | Trial of acid suppression; dietary modifications |
| Chest tightness with wheeze during exercise | Exercise-induced bronchoconstriction | Pre-exercise bronchodilator; pulmonary function testing |
| Multiple somatic complaints, school stress, hyperventilation | Anxiety or psychogenic chest pain | Reassurance after appropriate evaluation; consider mental health referral |
| History of Kawasaki disease with exertional symptoms | Coronary artery aneurysm or stenosis | Echocardiogram; stress testing; cardiology follow-up |
| Adolescent on oral contraceptives with acute pleuritic pain | Pulmonary embolism | D-dimer; CT pulmonary angiography if indicated |
| Sickle cell disease with chest pain, fever, hypoxia | Acute chest syndrome | Chest radiograph; urgent hematology consultation; supportive care |
6. Diagnostic Investigations
A stepwise, cost-effective approach guided by clinical suspicion in pediatric chest pain
The diagnostic workup for pediatric chest pain should be guided by history and physical examination findings. In the majority of cases, particularly those with clear musculoskeletal findings, no investigations are needed. Extensive testing in low-risk patients increases cost, may lead to incidental findings requiring further workup, and can reinforce illness behavior. Conversely, patients with red flag symptoms or abnormal examination findings require prompt and targeted evaluation.
Key Principle: Selective Investigation
The decision to investigate should be based on clinical suspicion, not routine protocol. Consider the following approach:
- No investigations needed: Classic musculoskeletal pain with reproducible tenderness, precordial catch syndrome, clear psychogenic etiology
- Basic investigations: Atypical features, prolonged symptoms, parental anxiety requiring reassurance
- Targeted cardiac workup: Exertional symptoms, syncope, palpitations, family history, abnormal examination
- Urgent evaluation: Acute distress, hemodynamic instability, suspected serious pathology
When Investigations Are NOT Needed
Clinical Scenarios Where Reassurance is Sufficient
- Classic precordial catch syndrome: Brief, sharp, localized pain worse with inspiration that resolves spontaneously
- Costochondritis with reproducible tenderness and no systemic symptoms
- Clear musculoskeletal strain with history of precipitating activity
- Anxiety-related chest pain with characteristic features and no red flags
- Pain that has been present for months to years without progression and with normal examination
In these scenarios, a thorough history and examination with appropriate reassurance is the most valuable intervention. Unnecessary testing may increase anxiety and healthcare utilization.
Baseline Investigations When Workup is Indicated
| Investigation | Purpose | What to Look For | Practical Points |
|---|---|---|---|
| Electrocardiogram (ECG) | Screen for arrhythmia, ischemia, pericarditis, cardiomyopathy, channelopathies | Rate, rhythm, intervals (PR, QRS, QTc), ST-T changes, hypertrophy patterns, pre-excitation | First-line test when cardiac cause is considered; interpret using age-appropriate criteria |
| Chest radiograph | Evaluate for pulmonary pathology, cardiac silhouette, bony abnormalities | Infiltrates, pneumothorax, cardiomegaly, pleural effusion, rib fractures, mediastinal widening | Indicated if respiratory symptoms, fever, or concern for pneumothorax; often normal in cardiac causes |
| Complete blood count | Assess for infection, anemia, or underlying hematologic condition | Leukocytosis (infection), anemia (may cause chest pain with exertion), thrombocytosis | Obtain if fever present or suspecting infection, anemia, or sickle cell disease |
| Basic metabolic panel | Assess electrolytes and renal function | Electrolyte abnormalities that could contribute to arrhythmia | Indicated if arrhythmia suspected or patient on medications affecting electrolytes |
Targeted Investigations by Suspected Etiology
If Suspecting Cardiac Disease
First-Line Cardiac Tests
- ECG: Assess for arrhythmia, ischemia, pericarditis (diffuse ST elevation, PR depression), hypertrophy (increased QRS voltage), prolonged QTc (>460 ms in children), pre-excitation (short PR, delta wave)
- Echocardiogram: Evaluate ventricular function, wall motion abnormalities, pericardial effusion, structural abnormalities, hypertrophic cardiomyopathy, valve disease, coronary artery origins (may be limited)
- Troponin: Elevated in myocarditis, myocardial injury, or rarely ischemia; high-sensitivity troponin preferred
Second-Line Cardiac Tests
- Holter monitor (24-48 hour): Capture intermittent arrhythmias when palpitations are frequent
- Event monitor or loop recorder: For infrequent symptoms; patient-activated recording
- Exercise stress testing: Evaluate exertional symptoms; assess for ischemia, exercise-induced arrhythmia, chronotropic response
- Cardiac MRI: Gold standard for myocarditis (late gadolinium enhancement), cardiomyopathy assessment, coronary artery visualization
- CT coronary angiography: Best imaging for coronary artery anomalies; requires contrast and radiation
If Suspecting Pericarditis or Myocarditis
| Investigation | Pericarditis Findings | Myocarditis Findings |
|---|---|---|
| ECG | Diffuse ST elevation (concave up), PR depression, may have low voltage if effusion | Sinus tachycardia, nonspecific ST-T changes, arrhythmias, conduction abnormalities |
| Troponin | May be mildly elevated (myopericarditis) | Usually elevated; degree correlates with myocardial injury |
| Inflammatory markers (CRP, ESR) | Typically elevated | Often elevated |
| BNP or NT-proBNP | Usually normal unless heart failure | Elevated with ventricular dysfunction |
| Echocardiogram | May show pericardial effusion; assess for tamponade physiology | Ventricular dysfunction, wall motion abnormalities, may be normal early |
| Cardiac MRI | Pericardial thickening and enhancement | Myocardial edema, late gadolinium enhancement; highly sensitive and specific |
If Suspecting Pulmonary Pathology
First-Line Tests
- Chest radiograph: Infiltrates (pneumonia), pneumothorax, pleural effusion, hyperinflation (asthma)
- Pulse oximetry: Assess oxygenation; hypoxia suggests significant pulmonary or cardiac pathology
- Peak flow or spirometry: If asthma suspected; assess for obstructive pattern; may be normal between episodes
Second-Line Tests
- CT chest: For suspected pulmonary embolism, complex pneumonia, mediastinal pathology
- CT pulmonary angiography: Gold standard for pulmonary embolism diagnosis
- D-dimer: Useful to rule out pulmonary embolism in low-risk patients; not specific
- Methacholine challenge: If cough-variant asthma suspected but spirometry normal
If Suspecting Gastrointestinal Causes
First-Line Approach
- Empiric trial of acid suppression: Proton pump inhibitor for 2-4 weeks is both diagnostic and therapeutic for gastroesophageal reflux disease
- Dietary modifications: Avoid caffeine, spicy foods, eating before bed
Second-Line Tests (If Empiric Trial Fails)
- Upper gastrointestinal endoscopy: Evaluate for esophagitis, ulcer disease, eosinophilic esophagitis
- pH monitoring or impedance study: Document acid and non-acid reflux events
- Upper gastrointestinal series: Assess anatomy if structural abnormality suspected
Pediatric-Specific Investigation Considerations
| Consideration | Details | Practical Implications |
|---|---|---|
| Radiation exposure | Children are more susceptible to radiation-induced malignancy; effects are cumulative | Limit CT scans; use lowest effective dose; consider alternatives (ultrasound, MRI) when appropriate |
| Sedation requirements | Young children may require sedation for MRI or CT | Weigh benefits against sedation risks; coordinate with anesthesia when needed |
| Age-appropriate reference ranges | ECG and laboratory values differ by age | Use pediatric-specific normal ranges; QTc, heart rate, and intervals vary with age |
| Cooperation for testing | Spirometry requires cooperation; typically reliable from age 6 and up | Consider impulse oscillometry for younger children; may need to defer testing |
| Exercise testing | Requires ability to exercise to adequate heart rate | Generally feasible from age 7-8; use age-appropriate protocols |
| Contrast administration | CT angiography and cardiac MRI require IV contrast | Ensure adequate hydration; be aware of contrast reactions; check renal function |
Empiric Treatment Trials as Diagnostic Tools
Sequential Empiric Therapy Approach
When diagnosis is uncertain and clinical suspicion is moderate, empiric treatment trials can serve as diagnostic tools. Response to therapy supports the suspected diagnosis.
- Gastroesophageal reflux disease trial: Proton pump inhibitor (e.g., omeprazole 1 mg/kg/day, max 20-40 mg) for 2-4 weeks; improvement suggests acid-related cause
- Asthma trial: Short-acting bronchodilator before exercise or scheduled inhaled corticosteroid for 2-4 weeks; improvement suggests reactive airway disease
- Anti-inflammatory trial: Nonsteroidal anti-inflammatory drug (ibuprofen or naproxen) for 1-2 weeks for suspected musculoskeletal pain; improvement supports musculoskeletal etiology
- Anxiety management: If psychogenic cause suspected, reassurance, stress reduction techniques, and if needed, mental health referral; improvement supports anxiety-related cause
Investigation Algorithm Summary
| Clinical Scenario | Recommended Initial Investigations | Consider Additional Tests If |
|---|---|---|
| Classic musculoskeletal pain, reproducible tenderness, no red flags | None required | Symptoms persist despite treatment; atypical features develop |
| Atypical chest pain, no red flags, parental concern | ECG, chest radiograph | Abnormalities found; symptoms persist or progress |
| Exertional symptoms, syncope, or palpitations | ECG, echocardiogram; consider Holter monitor | Exercise stress test, cardiac MRI, CT coronary angiography if indicated |
| Family history of sudden cardiac death or cardiomyopathy | ECG, echocardiogram | Genetic testing, cardiac MRI if structural abnormality suspected |
| Fever with chest pain | ECG, chest radiograph, CBC, inflammatory markers, troponin if cardiac suspected | Echocardiogram if pericarditis or myocarditis suspected |
| Acute dyspnea with chest pain | Chest radiograph, pulse oximetry, ECG | CT if pneumothorax not seen on radiograph but suspected; CT pulmonary angiography if pulmonary embolism suspected |
| History of Kawasaki disease | ECG, echocardiogram (focus on coronary arteries) | Stress testing, cardiac MRI or CT angiography for coronary assessment |
7. Pattern Recognition and Clinical Decision-Making
Practical algorithms and decision pathways for pediatric chest pain
Effective clinical decision-making in pediatric chest pain requires rapid triage to identify the rare serious conditions while avoiding unnecessary workup in the majority with benign causes. This section provides practical algorithms to guide your approach from initial assessment through disposition.
Step 1: Is This Urgent?
| Clinical Scenario | Urgency Level | Immediate Action |
|---|---|---|
| Hemodynamic instability (hypotension, poor perfusion, altered mental status) | EMERGENT | Resuscitation; IV access; cardiac monitor; urgent echocardiogram; consider tension pneumothorax, cardiac tamponade, massive pulmonary embolism, cardiogenic shock |
| Severe respiratory distress with hypoxia | EMERGENT | Supplemental oxygen; chest radiograph; if tension pneumothorax suspected, immediate needle decompression |
| Active chest pain with syncope or near-syncope | EMERGENT | Cardiac monitor; ECG; restrict activity; urgent cardiology consultation |
| Exertional chest pain in young athlete | URGENT | Restrict from sports pending evaluation; ECG and echocardiogram; cardiology referral |
| Chest pain with fever and ill appearance | URGENT | ECG, chest radiograph, inflammatory markers, troponin; evaluate for pericarditis, myocarditis, or pneumonia |
| Chest pain with palpitations | URGENT | ECG during symptoms if possible; Holter or event monitor; evaluate for arrhythmia |
| Sharp positional pain better leaning forward (suspected pericarditis) | URGENT | ECG, echocardiogram, inflammatory markers; assess for effusion and tamponade physiology |
| Acute pleuritic pain in adolescent on oral contraceptives | URGENT | Assess for pulmonary embolism; D-dimer and CT pulmonary angiography if indicated |
| Chronic or recurrent chest pain with reproducible tenderness, no red flags | ROUTINE | Reassurance; symptomatic treatment; outpatient follow-up if needed |
| Brief, sharp pain consistent with precordial catch syndrome | ROUTINE | Reassurance; no workup needed; education about benign nature |
Step 2: Classify by Duration and Acuity
Acute (<48 hours)
Priority: Exclude serious acute pathology
Focus: Pneumothorax, pericarditis, myocarditis, pneumonia, pulmonary embolism
Proceed to Algorithm A
Subacute (48 hours–2 weeks)
Priority: Monitor for evolution; identify developing conditions
Focus: Post-viral pericarditis, evolving musculoskeletal pain, resolving infection
Proceed to Algorithm B
Chronic (>2 weeks)
Priority: Identify pattern; reassure if benign
Focus: Musculoskeletal, idiopathic, gastroesophageal reflux disease, anxiety
Proceed to Algorithm C
Step 3: Follow the Appropriate Algorithm
Algorithm A: Acute Chest Pain (<48 hours)
| Clinical Scenario | Most Likely Diagnosis | Action |
|---|---|---|
| Sudden onset, dyspnea, decreased breath sounds unilaterally, tall thin adolescent | Pneumothorax | Chest radiograph; if large or symptomatic, chest tube; if tension, immediate needle decompression |
| Sharp pain worse lying flat, better leaning forward, recent viral illness, friction rub | Pericarditis | ECG, echocardiogram, inflammatory markers; nonsteroidal anti-inflammatory drugs; monitor for effusion |
| Chest pain with fatigue, dyspnea, decreased exercise tolerance after viral illness, tachycardia | Myocarditis | ECG, troponin, BNP, echocardiogram; admit for monitoring; cardiology consultation |
| Fever, cough, pleuritic pain, crackles on examination | Pneumonia | Chest radiograph; appropriate antimicrobials; assess need for hospitalization |
| Acute dyspnea, pleuritic pain, adolescent on oral contraceptives or with immobility | Pulmonary embolism | D-dimer; CT pulmonary angiography if indicated; anticoagulation if confirmed |
| Exertional chest pain or syncope during sports | Coronary anomaly or hypertrophic cardiomyopathy | ECG, echocardiogram; restrict from sports; urgent cardiology evaluation |
| Sharp, localized pain after coughing, physical activity, or minor trauma | Musculoskeletal strain | Reassurance; nonsteroidal anti-inflammatory drugs; rest |
| Chest tightness with wheezing, cough, known asthma | Asthma exacerbation | Bronchodilators; systemic corticosteroids if moderate-severe; assess severity |
Algorithm B: Subacute Chest Pain (48 hours–2 weeks)
| Clinical Scenario | Most Likely Diagnosis | Action |
|---|---|---|
| Pain at costochondral junctions developing after upper respiratory infection | Post-viral costochondritis | Reassurance; nonsteroidal anti-inflammatory drugs; expect resolution over weeks |
| Persistent cough with chest wall soreness | Cough-induced musculoskeletal pain | Treat underlying cough; analgesics; reassurance |
| Post-viral fatigue with mild chest discomfort, slightly reduced exercise tolerance | Possible resolving viral syndrome vs early myocarditis | ECG, consider troponin; if abnormal or symptoms progress, echocardiogram |
| Recurrent sharp pains lasting seconds, no clear pattern | Precordial catch syndrome | Reassurance; education about benign nature; no workup if classic features |
Algorithm C: Chronic or Recurrent Chest Pain (>2 weeks)
| Clinical Scenario | Most Likely Diagnosis | Action |
|---|---|---|
| Reproducible tenderness at costochondral junctions, worse with movement | Costochondritis | Reassurance; nonsteroidal anti-inflammatory drugs; stretching exercises; may take weeks to months to resolve |
| Brief, sharp, localized pain worse with inspiration, spontaneously resolves | Precordial catch syndrome | Reassurance only; very common, benign, self-limiting |
| Burning substernal pain worse after meals or at night | Gastroesophageal reflux disease | Trial of proton pump inhibitor; dietary modifications; if persistent, consider endoscopy |
| Chest tightness with exercise, associated with cough or wheeze | Exercise-induced bronchoconstriction | Pre-exercise bronchodilator; consider inhaled corticosteroids; spirometry with bronchodilator response |
| Multiple somatic complaints, school stress, hyperventilation symptoms | Anxiety-related chest pain | Reassurance after appropriate evaluation; address stressors; consider mental health referral |
| Recurrent exertional symptoms; family history of sudden death or cardiomyopathy | Possible hypertrophic cardiomyopathy or inherited arrhythmia | ECG, echocardiogram; cardiology referral; genetic counseling may be indicated |
| Chronic pain with no identifiable cause despite thorough evaluation | Idiopathic chest pain | Reassurance; acknowledge pain is real; avoid repeated investigations; consider pain management strategies |
“What Do I Do If…” Decision Reference
| Clinical Situation | Immediate Action | Next Step |
|---|---|---|
| Child has exertional chest pain but normal ECG and echocardiogram | Consider exercise stress test to evaluate symptoms under exertion | If stress test normal, reassurance; if abnormal, cardiac MRI or CT coronary angiography |
| Adolescent athlete has syncope during practice | Immediate restriction from all sports; urgent ECG and echocardiogram | Cardiology evaluation before any return to sports; may need advanced imaging |
| Parents are very anxious despite reassurance and normal examination | Consider limited workup (ECG, chest radiograph) to address concerns | Explain results clearly; provide specific return precautions; schedule follow-up if needed |
| ECG shows prolonged QTc (>460 ms) | Repeat ECG to confirm; check electrolytes; review medications | Cardiology referral; family ECG screening; consider genetic testing for long QT syndrome |
| Echocardiogram shows mild pericardial effusion | Assess hemodynamic status; check for tamponade physiology | If stable, treat underlying cause; serial echocardiograms; cardiology involvement |
| Child has chest pain but can’t describe it well (young or developmentally delayed) | Rely on observed behaviors and vital signs; thorough examination | Lower threshold for basic workup (ECG, chest radiograph); involve caregivers in monitoring |
| Adolescent admits to cocaine or stimulant use | ECG; cardiac monitoring; assess for acute coronary syndrome | If ischemia suspected, cardiology consultation; benzodiazepines (avoid beta-blockers); substance use counseling |
| Child has known Kawasaki disease history with new chest pain | ECG, echocardiogram with focus on coronary arteries | Cardiology follow-up; consider stress testing or advanced coronary imaging |
| Multiple ED visits for chest pain with negative workups | Review all prior workups; avoid repeating unnecessary tests | Establish primary care follow-up; address anxiety or functional pain; consider mental health referral |
When to Involve Pediatric Subspecialists
Pediatric Cardiology Referral
- Exertional chest pain or syncope
- Abnormal ECG or echocardiogram
- Family history of sudden cardiac death, cardiomyopathy, or arrhythmia
- Known or suspected congenital heart disease
- History of Kawasaki disease
- Suspected pericarditis or myocarditis
- Marfan syndrome or other connective tissue disorder
- Palpitations with chest pain
Other Subspecialty Referrals
- Pulmonology: Refractory asthma, suspected interstitial lung disease, recurrent pneumothorax
- Gastroenterology: Refractory gastroesophageal reflux disease, dysphagia, suspected eosinophilic esophagitis
- Orthopedics or Sports Medicine: Complex musculoskeletal pain, slipping rib syndrome
- Psychology or Psychiatry: Anxiety-related chest pain, panic disorder, functional pain syndrome
- Hematology: Sickle cell disease with acute chest syndrome
Troubleshooting Refractory Chest Pain
When Symptoms Persist Despite Initial Management
- Reassess the diagnosis: Was the initial diagnosis correct? Review history for missed details.
- Consider overlapping causes: Multiple etiologies may coexist (e.g., asthma plus gastroesophageal reflux disease, musculoskeletal plus anxiety).
- Evaluate treatment adequacy: Was the treatment duration sufficient? Was compliance good?
- Look for psychosocial factors: Anxiety, depression, school stress, or family dysfunction may perpetuate symptoms.
- Avoid repeated testing: Multiple negative workups can reinforce illness behavior; focus on reassurance and coping strategies.
- Consider referral: Subspecialty evaluation may be warranted for persistent symptoms.
- Validate the experience: Acknowledge that the pain is real even if no structural cause is found; chronic pain management principles may apply.
8. Clinical Pearls and Pitfalls
Practical wisdom — learn from successes and avoid common mistakes in pediatric chest pain
Must-Know Clinical Pearls
The reassuring reality: Fewer than 1-2% of children with chest pain have a cardiac cause. The vast majority have benign, self-limiting conditions.
Reproducible tenderness is your friend: If you can reproduce the patient’s exact pain by pressing on the chest wall, a musculoskeletal cause is highly likely and extensive cardiac workup is not needed.
Exertional symptoms are the key red flag: Chest pain or syncope that occurs during exertion should always trigger cardiac evaluation, as this pattern suggests coronary anomalies or hypertrophic cardiomyopathy.
Family history matters enormously: A family history of sudden cardiac death, cardiomyopathy, or early coronary disease significantly changes the pre-test probability and mandates thorough evaluation.
Precordial catch syndrome is extremely common: Brief, sharp, localized pain that is worse with inspiration and resolves spontaneously within minutes is classic precordial catch — reassurance is the only treatment needed.
Normal ECG and echocardiogram are highly reassuring: In the absence of red flag symptoms, normal baseline cardiac testing effectively rules out most significant cardiac pathology.
Think about myocarditis after viral illness: A child with chest pain, fatigue, and decreased exercise tolerance following a viral illness should be evaluated for myocarditis, especially if tachycardia is present.
Pericarditis has a characteristic positional quality: Pain that is worse lying flat and better leaning forward is classic for pericarditis — listen carefully for a friction rub.
Don’t forget gastroesophageal reflux disease: Substernal burning pain that is worse after eating or at night may be reflux-related; a trial of proton pump inhibitor is both diagnostic and therapeutic.
Anxiety is real and treatable: Psychogenic chest pain is common in adolescents; after appropriate evaluation, address the underlying anxiety rather than repeating unnecessary tests.
Critical Pitfalls to Avoid
Dismissing exertional symptoms: Never attribute exertional chest pain or syncope to deconditioning without proper cardiac evaluation. Coronary anomalies and hypertrophic cardiomyopathy can present this way before sudden death.
Ignoring family history of sudden death: A family history of unexplained sudden death, especially in young relatives, requires thorough cardiac screening regardless of how benign the child’s symptoms seem.
Over-testing low-risk patients: Extensive workup in children with classic benign presentations increases cost, may lead to incidental findings, and can reinforce illness behavior and anxiety.
Missing myocarditis in the “tired” post-viral child: Chest pain with fatigue and decreased exercise tolerance after viral illness should raise suspicion for myocarditis — check troponin and consider echocardiogram.
Forgetting Kawasaki disease history: Children with prior Kawasaki disease may have coronary artery aneurysms or stenosis; always ask about this history and evaluate accordingly.
Not considering pulmonary embolism in adolescents: Though rare, pulmonary embolism can occur in adolescents, particularly those on oral contraceptives, with recent immobility, or with thrombophilia.
Attributing all chest pain to anxiety without evaluation: While anxiety-related chest pain is common, it should be a diagnosis of exclusion after appropriate history, examination, and selective testing.
Failing to ask about substance use in adolescents: Cocaine, stimulants, and energy drinks can cause cardiac symptoms; ask confidentially and without judgment.
Using adult criteria for pediatric ECG interpretation: Pediatric ECGs have different normal values; use age-appropriate criteria to avoid misdiagnosis.
Allowing return to sports before proper clearance: Athletes with exertional symptoms or concerning findings should be restricted from sports until cleared by cardiology.
Key Takeaways
- Pediatric chest pain is common and almost always benign — cardiac causes account for fewer than 1-2% of cases.
- The most common causes are musculoskeletal (costochondritis, precordial catch syndrome, strain), idiopathic, and anxiety-related.
- Red flags requiring urgent evaluation include: exertional symptoms, syncope, palpitations, family history of sudden death, known heart disease, and fever with ill appearance.
- A thorough history and physical examination can identify most diagnoses without extensive testing.
- Reproducible chest wall tenderness strongly suggests a musculoskeletal cause and is reassuring.
- ECG is the first-line cardiac test; echocardiogram is indicated when structural disease or pericardial effusion is suspected.
- Myocarditis and pericarditis are the most common serious cardiac causes in children and often follow viral illness.
- Coronary anomalies and hypertrophic cardiomyopathy may present with exertional symptoms and can cause sudden death in young athletes.
- When cardiac workup is negative, focus on reassurance, education, and addressing psychosocial factors rather than repeating tests.
- Idiopathic chest pain is a valid diagnosis — acknowledge that the pain is real even when no cause is found.
Quick Reference Algorithm
Systematic Approach to Pediatric Chest Pain:
- Assess stability: Is the child hemodynamically stable and in no respiratory distress? If unstable, initiate emergency management.
- Identify red flags: Exertional symptoms, syncope, palpitations, family history of sudden death, known cardiac disease, fever with ill appearance.
- Perform thorough history and examination: Use the CHEST PAIN mnemonic; attempt to reproduce symptoms with palpation.
- Classify by clinical presentation: Musculoskeletal, respiratory, gastrointestinal, cardiac, or psychogenic.
- Selective testing based on findings: No tests needed for classic benign presentations; ECG and echocardiogram for suspected cardiac causes; chest radiograph for pulmonary concerns.
- Treat the underlying cause: Nonsteroidal anti-inflammatory drugs for costochondritis; bronchodilators for asthma; proton pump inhibitor trial for gastroesophageal reflux disease; reassurance for precordial catch and anxiety.
- Provide appropriate follow-up: Clear return precautions; scheduled follow-up for persistent symptoms; subspecialty referral when indicated.
- Educate and reassure: Explain the diagnosis in age-appropriate terms; address parental anxiety; emphasize the benign nature when appropriate.