VHOSPITAL.CLINIC · Differential Diagnosis
Pericarditis vs Pleurisy
Clinical comparison — shared symptoms, key differences, distinguishing diagnostic tests, treatment pathways, and when to seek urgent evaluation.
Condition Overview
Condition A
Pericarditis
Pericarditis is inflammation of the pericardium (the sac surrounding the heart), causing sharp, pleuritic chest pain that improves when leaning forward. Viral infections are the most common cause; NSAIDs are the primary treatment.
Condition B
Pleurisy
Pleurisy is inflammation of the pleural membranes surrounding the lungs, causing sharp chest pain that worsens when breathing deeply or coughing.
Shared Symptoms — Why They're Confused
Both conditions present with 4 overlapping symptoms, making clinical differentiation essential.
Key Clinical Differences
Pericarditis
- Sharp pleuritic chest pain worse on inspiration
- Fever
- Cough
- Post-viral context
Pleurisy
- Pain is purely respiratory — worse on deep inspiration, cough
- Pleural rub on auscultation at lung bases
- No ECG changes
- May have associated pleural effusion
Distinguishing Diagnostic Tests
| Test | Pericarditis | Pleurisy |
|---|---|---|
| ECG | Diffuse saddle-shaped ST elevation and PR depression — pericarditis | Normal ECG — no cardiac involvement |
| Echocardiography | Pericardial effusion (may be present) | Normal — may show adjacent pleural fluid |
| Pleural/pericardial ultrasound | Pericardial fluid or pericardial thickening | Pleural fluid with fibrinous strands — exudate |
Treatment Approaches
Pericarditis
- •NSAIDs + colchicine
- •Activity restriction ×3 months
- •Corticosteroids if NSAIDs fail
Pleurisy
- •NSAIDs for pain
- •Treat underlying cause (viral: supportive; bacterial: antibiotics)
- •Thoracentesis if large effusion
When Doctors Consider Each Diagnosis
🔵 Consider Pericarditis when:
- →Central positional chest pain relieved by sitting forward; diffuse ECG changes; pericardial rub
🟢 Consider Pleurisy when:
- →Lateral chest pain on inspiration only; normal ECG; pleural rub at lung base; no cardiac involvement
Explore Each Condition in Detail
Related Clinical Pages
Medical References
Content on this page is informed by evidence-based clinical sources including:
- World Health Organization (WHO)Global health guidance and disease classification
- National Health Service (NHS)UK clinical guidelines and patient information
- National Institute for Health and Care Excellence (NICE)Evidence-based clinical practice guidelines
- Centers for Disease Control and Prevention (CDC)US public health data and clinical recommendations
- PubMed – NCBIPeer-reviewed biomedical literature and clinical studies
- Cochrane LibrarySystematic reviews and meta-analyses in evidence-based medicine
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