Chest Pain in a 24-Year-Old: Diagnosis & Treatment

Overview

Immediate "Must-Not-Miss" (Life-Threatening) Causes

Differential Diagnosis by System

Cardiovascular

• Pericarditis - pleuritic sharp pain, worse supine, better leaning forward; friction rub; diffuse ST elevation on ECG
• Myocarditis - often post-viral, elevated troponin, may have arrhythmias
• HCM (Hypertrophic Cardiomyopathy) - exertional chest pain and syncope; murmur increases with Valsalva
• Prinzmetal/Vasospastic angina - pain at rest, ST elevation that resolves; often triggered by cocaine, stress, cold
• Wolff-Parkinson-White - palpitations with chest discomfort
• Cocaine/stimulant use - causes vasospasm and thrombus formation in young users

Pulmonary

• Spontaneous pneumothorax - sudden unilateral pleuritic pain + dyspnea; most common in tall, thin young males (Marfanoid build)
• Pleuritis/pleuropneumonia - infection-related sharp pain, worse with breathing
• PE - tachycardia, pleuritic pain, hypoxia; use Wells score

Gastrointestinal (most common overall cause)

• GERD/esophageal reflux - burning, retrosternal, post-prandial, responds to antacids (can mimic angina; note: responds to nitroglycerin too)
• Esophageal spasm - severe squeezing pain, may radiate, responds to nitrates
• Peptic ulcer / gastritis - epigastric component

Musculoskeletal (very common in young adults)

• Costochondritis - reproducible tenderness at costochondral junctions, especially 2nd-5th ribs
• Tietze syndrome - costochondritis with visible/palpable swelling
• Muscle strain - history of recent physical activity
• Rib stress fracture - athletes, especially throwing sports

Psychiatric/Functional

• Panic disorder - accounts for 43% of chest pain with normal coronary angiograms in young patients (Harrison's, 22nd Ed.). Sudden onset within 10 min, palpitations, sweating, fear of doom; onset typically in late adolescence/early adulthood
• Anxiety disorder
• Somatic symptom disorder

Other

• Herpes zoster - dermatomal pain that precedes the rash
• Anemia/thyrotoxicosis - increased O2 demand causing supply-demand mismatch

Diagnostic Workup

First 10 Minutes (Emergency Priority)

1. 12-lead ECG - obtain within 10 minutes of arrival per guidelines
   • Look for: ST elevation (STEMI), PR depression (pericarditis), Brugada pattern, Wellens syndrome (deep anterior T wave inversions = LAD lesion), RBBB (PE - S1Q3T3)
   • Causes of ST elevation in chest pain: AMI, pericarditis, LVH, early repolarization (benign), PE, Brugada, Prinzmetal angina, hyperkalemia
2. Vital signs - BP both arms, O2 sat, HR, RR
3. IV access + monitoring

Initial Labs

• High-sensitivity troponin (serial: 0h and 3h minimum) - key for ACS/myocarditis
• BMP - electrolytes, glucose, renal function
• CBC - anemia
• D-dimer - if PE suspected (Wells score ≥2 or simplified Geneva score)
• CXR - pneumothorax, pneumonia, widened mediastinum (dissection), cardiomegaly

Risk Stratification: The HEART Score

• Score 0-3: Low risk - candidate for early ED discharge + outpatient follow-up
• Score 4-6: Moderate risk - observation + further evaluation
• Score 7-10: High risk - urgent/emergent intervention

Note: A 24-year-old with no risk factors, normal ECG, and normal troponin will almost always score 0-1, placing them in the low-risk category.

Additional Testing (guided by findings)

• Echo - if HCM, pericarditis, or wall motion abnormalities suspected
• CT pulmonary angiography (CTPA) - if PE suspected
• CT aortography - if dissection suspected
• Stress testing - for patients with intermediate risk after ACS ruled out
• Coronary CT angiography (CCTA) - low-intermediate risk for CAD (radiation: 2-5 mSv)
• Esophagogastroduodenoscopy (EGD) / pH study - if GI cause suspected after cardiac workup

Treatment by Cause

ACS (if confirmed or high suspicion)

• Aspirin 325 mg (chew) + P2Y12 inhibitor (clopidogrel/ticagrelor)
• Anticoagulation (UFH or LMWH)
• STEMI: activate cath lab for primary PCI within 90 min
• NSTEMI: risk-stratified approach; urgent angio if high-risk features

Pericarditis

• First-line: NSAIDs (ibuprofen 600 mg TID x 2 weeks) + colchicine 0.5 mg BID x 3 months (reduces recurrence)
• Restrict strenuous exercise until symptom-free
• Corticosteroids only if NSAID-refractory (increases recurrence risk)

Myocarditis

• Supportive care; restrict exercise (risk of sudden cardiac death)
• Treat underlying cause (viral: supportive; autoimmune: immunosuppression)
• Heart failure therapy if systolic dysfunction present

Spontaneous Pneumothorax

• Small, stable: observation ± supplemental O2 (accelerates reabsorption)
• Large/symptomatic: needle decompression or chest tube (pigtail catheter)
• Recurrent: pleurodesis or surgical pleurectomy

PE

• Anticoagulation (LMWH, rivaroxaban, apixaban)
• Massive PE with hemodynamic instability: systemic thrombolysis or catheter-directed therapy

Musculoskeletal (Costochondritis)

• NSAIDs (ibuprofen/naproxen) for 1-2 weeks
• Local heat, activity modification
• Intercostal nerve block for refractory cases

GERD/Esophageal

• PPI (omeprazole 20-40 mg daily x 4-8 weeks)
• Dietary modification, avoid triggers, elevation of head of bed
• Esophageal spasm: calcium channel blockers, nitrates, low-dose antidepressants

Panic Disorder

• SSRIs (first-line, e.g., sertraline, paroxetine) - require 4-6 weeks for effect
• Cognitive behavioral therapy (CBT)
• Short-term benzodiazepines for acute attacks only (avoid long-term)
• Diagnosis of exclusion - do not label as panic until cardiac/pulmonary causes ruled out

Clinical Pearls for a 24-Year-Old

1. Musculoskeletal and GI are the most common causes at this age - but always rule out life-threatening causes first
2. Reproducible tenderness at the costochondral junction = costochondritis (but note: ~7% of MI patients also have chest wall tenderness)
3. Pericarditis is common in young males - look for the "positional" quality (better sitting forward) and friction rub
4. Cocaine/stimulant use can cause MI at any age - ask directly and non-judgmentally
5. Panic disorder = 43% of young patients with chest pain and normal angiograms (Harrison's 22nd Ed.) - a psychiatric diagnosis to keep high on the list
6. Do not discharge from the ED on "panic disorder" without ruling out cardiac pathology
7. Tall, thin, young male + sudden pleuritic pain = spontaneous pneumothorax until proven otherwise
8. Female athletes + OCP = elevated PE risk even at 24
9. HCM is the leading cause of sudden cardiac death in young athletes

• The Washington Manual of Medical Therapeutics (Table 4-3: Differential Diagnosis of Chest Pain)
• Rosen's Emergency Medicine (Chapter 64: ECG approach, HEART Score, HEART Pathway)
• Murray & Nadel's Textbook of Respiratory Medicine (Cardiac ischemia, risk stratification)
• Harrison's Principles of Internal Medicine, 22nd Ed. (Panic disorder: 43% of normal-angiogram chest pain)
• 2021 AHA/ACC Chest Pain Guideline