Pericarditis is inflammation of the pericardium, the thin, two-layered sac that surrounds and protects the heart. Many cases improve with medication and rest, but some can lead to serious complications. Knowing the pericarditis causes, pericarditis symptoms, and pericarditis treatments can help you decide when to seek care and what to expect during recovery.
Overview of Pericarditis?
The pericardium helps stabilize the heart in the chest, reduces friction as it beats, and prevents sudden overexpansion. When it becomes inflamed, it can cause sharp chest pain and other symptoms. Understanding pericarditis causes and how they affect the pericardium is the first step toward effective care.
- Acute pericarditis: symptoms last under 4–6 weeks.
- Recurrent pericarditis: symptoms return after a symptom-free period.
- Chronic pericarditis: inflammation persists beyond 3 months.
- Constrictive pericarditis: scarring and thickening restrict the heart’s ability to fill.
Common pericarditis causes and risk factors include viral infections (such as common cold viruses), bacterial infections (including tuberculosis), autoimmune diseases (lupus, rheumatoid arthritis), inflammatory conditions, reactions after a heart attack or cardiac surgery (post-cardiac injury syndrome), medication reactions, kidney failure (uremic pericarditis), chest trauma, and, less commonly, cancer or prior chest radiation. In many people, no specific cause is identified (idiopathic), though a viral trigger is often suspected.
Pericarditis differs from other causes of chest pain. Myocarditis involves inflammation of the heart muscle and may cause heart failure symptoms or abnormal heart rhythms. Pleurisy is inflammation of the lung lining and causes pain that worsens with breathing but lacks classic pericardial features. A heart attack typically causes pressure or tightness with abnormal cardiac enzymes and coronary blockage, while pericarditis pain is often sharp, varies with position, and has distinct ECG patterns. Constrictive pericarditis is a distinct form in which the pericardium becomes stiff and limits filling, leading to fluid retention and reduced exercise tolerance.
Symptoms of Pericarditis
Classic pericarditis symptoms include sharp, stabbing chest pain that may radiate to the neck, shoulders, or back. Pain often worsens with deep breaths, coughing, or lying flat and improves when sitting up or leaning forward. Other pericarditis symptoms may include shortness of breath, low-grade fever, cough, fatigue, and palpitations.
Complications can be serious. Cardiac tamponade occurs when excess fluid accumulates around the heart and impairs its ability to pump. Warning signs include worsening shortness of breath, chest fullness, lightheadedness, fainting, very low blood pressure, rapid heartbeat, swelling in the legs or abdomen, and neck vein distention. Constrictive pericarditis can cause progressive swelling, abdominal fullness, fatigue, and shortness of breath with activity.
Seek emergency care immediately for severe or crushing chest pain, fainting, marked shortness of breath, a very fast heart rate, confusion, or very low blood pressure. Call 911 if a heart attack is possible. Schedule prompt outpatient evaluation for persistent sharp chest pain that improves when sitting up, fever lasting more than 48 hours with chest discomfort, or a return of pericarditis symptoms after recent recovery. If you have a history of pericarditis and notice new swelling, rapid weight gain, or worsening breathlessness, contact your clinician urgently.
Diagnosis and Tests for Pericarditis
Diagnosis starts with a detailed history and physical exam. Clinicians listen for a pericardial rub, a scratchy, grating sound from the inflamed layers of the pericardium rubbing together. Vital signs and signs of fluid around the heart or restricted filling are assessed. Because chest pain has many causes, the care team will also consider and rule out heart attack, pulmonary embolism, pneumonia, aortic dissection, myocarditis, and pleurisy.
Key tests may include:
- ECG (electrocardiogram) to look for diffuse ST-segment elevations and PR depressions.
- Chest X-ray to evaluate heart size and lung fields.
- Echocardiogram to visualize the pericardium, detect fluid (effusion), and assess heart function.
- Cardiac MRI when needed to evaluate inflammation, thickening, or constriction.
- Blood tests, including inflammatory markers (C-reactive protein, erythrocyte sedimentation rate), white blood cell count, and cardiac enzymes (troponin) to assess for associated myocarditis or heart attack.
When there is significant fluid and the cause is unclear, pericardial fluid may be sampled to evaluate for infection, cancer cells, and other clues. The care team integrates symptoms, exam findings, lab results, and imaging to determine cause and severity. High fever, a large or increasing effusion, evidence of tamponade, or poor response to initial therapy prompt more aggressive treatment and closer monitoring. Underlying conditions, such as autoimmune disease, kidney disease, or recent cardiac surgery, also shape the management plan.
Treatment and Recovery for Pericarditis
Most cases improve with anti-inflammatory medication and rest. First-line pericarditis treatments typically include nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen or high-dose aspirin for 1 to 2 weeks, followed by a gradual taper as symptoms and inflammatory markers improve. Colchicine is commonly added for 3 months in acute pericarditis and up to 6 months or longer in recurrent cases to reduce relapse risk. Corticosteroids are reserved for patients who cannot take NSAIDs or have autoimmune causes; the lowest effective dose with a slow taper helps prevent recurrence. If a specific infection is identified, targeted antibiotics or antifungals are prescribed, and tuberculosis-related cases require multidrug therapy. Always follow your clinician’s dosing and tapering instructions for all pericarditis treatments.
Procedures may be needed for complications or persistent effusions. Pericardiocentesis uses a needle and catheter to drain fluid from around the heart, relieving tamponade and allowing fluid analysis. A surgical pericardial window creates a small opening to prevent fluid from reaccumulating. For constrictive pericarditis that does not respond to medical therapy, pericardiectomy (surgical removal of the pericardium) can improve symptoms and function; evaluation by a heart team helps determine timing and candidacy.
Recovery focuses on controlling symptoms, preventing relapse, and addressing pericarditis causes and underlying conditions. Reduce activity during the acute phase and avoid strenuous exercise until pain resolves and inflammatory markers normalize. Athletes usually pause training for at least several weeks, with return guided by a clinician. Follow-up visits monitor symptoms, physical findings, and tests such as CRP and echocardiography. Preventive measures include staying current on recommended vaccinations, especially for respiratory infections; managing autoimmune or kidney disease; and reviewing medications for potential triggers. Seek care promptly if chest pain returns, fever develops, or you notice swelling or shortness of breath. Early recognition of pericarditis symptoms and timely pericarditis treatments help prevent complications, including constrictive pericarditis, and support a full recovery.