Pericarditis

Pericarditis is inflammation of the sac that surrounds the heart. The hallmark symptom is chest pain, but the character of the pain, accompanying findings, and risk of complications are not the same in every patient. ^[1][2]

What is pericarditis?

Pericarditis is inflammation of the pericardium, the membrane surrounding the heart. It may develop after a viral infection, but it can also be related to autoimmune disease, myocardial infarction, kidney failure, trauma, surgery, or certain medications. Clinically, the condition matters not only because it causes pain, but because some patients may develop pericardial effusion, recurrent episodes, or more serious circulatory problems. In many people it begins acutely and improves with appropriate treatment. However, recurrent symptoms, prolonged inflammation, or high-risk features require closer follow-up. Pericarditis should not be minimized as “just an inflammatory cause of chest pain,” because in selected patients it can progress or recur. ^[1][2][4]

What are the symptoms?

The best-known symptom of pericarditis is chest pain. The pain is often described as sharp, stabbing, or knife-like. It may worsen with deep breathing, coughing, or lying flat, and may improve when leaning forward. Fever, fatigue, palpitations, shortness of breath, and general malaise may accompany the pain. Not every case of chest pain is pericarditis; myocardial infarction, pulmonary disease, and other serious causes must also be excluded. For that reason, people should not attempt to diagnose themselves. Chest pain accompanied by shortness of breath, dizziness, near-fainting, or marked palpitations deserves especially urgent evaluation. ^[1][2][3]

What causes it?

The causes of pericarditis are diverse. Viral infections are common triggers, but bacterial infections, autoimmune diseases, post-myocardial infarction inflammation, reactions after cardiac surgery, kidney failure, cancer, trauma, and certain drugs can also be involved. Even so, no definite cause is identified in many cases, which are classified as idiopathic. Determining the cause matters because infectious, autoimmune, uremic, and other forms are not managed in exactly the same way. In recurrent pericarditis, immune-mediated inflammation may be more strongly implicated. Clinical evaluation should therefore aim not only to suppress symptoms but also to understand the underlying driver and the risk of relapse. ^[1][4][5]

How is the diagnosis made?

Diagnosis is based on a combination of history, physical examination, ECG, echocardiography, blood tests, and when necessary additional imaging. The clinician evaluates the nature of the chest pain, the presence of fever or recent infection, autoimmune disease, and warning signs that suggest complications. Typical ECG changes may be present, and echocardiography is important for identifying associated pericardial fluid. Inflammatory markers may be elevated in blood tests. CT or MRI can be helpful in selected complex or prolonged cases. The purpose of diagnosis is not only to label the condition as pericarditis, but also to assess risk, exclude emergencies such as tamponade, and investigate the underlying cause. ^[1][2][4]

What are the treatment options?

Anti-inflammatory medications form the mainstay of treatment in many patients, and colchicine is often added to reduce the risk of recurrence. Rest, temporary restriction of strenuous activity, and close clinical follow-up are important. In selected cases, corticosteroids may be considered, but they should not be used casually because they may increase relapse risk in some settings. If infection, autoimmune disease, or kidney failure is the underlying cause, management must be tailored accordingly. Large effusions or tamponade may require drainage. The guiding principle is not merely to relieve chest pain, but to control inflammation and prevent complications. ^[1][2][4]

Complications and risk of recurrence

Most people recover from pericarditis, but some develop pericardial effusion, and rapid fluid accumulation can lead to tamponade. Another group may experience recurrence. Recurrent pericarditis can significantly affect quality of life and may require prolonged follow-up. In rare cases, chronic structural complications such as constrictive pericarditis can develop. For this reason, the disappearance of pain should not automatically be taken to mean that the condition is completely resolved. Persistent fever, recurrent pain, reduced exercise tolerance, or increasing shortness of breath all warrant re-evaluation. Although the prognosis is often favorable, complications can make the illness more serious very quickly. ^[1][4][5]

What should be considered in daily life?

Lifestyle recommendations depend on disease severity. In the acute phase, strenuous exercise and physically demanding activities are usually restricted, because early return while inflammation is still active may prolong symptoms. Medications should be taken regularly, and follow-up appointments should not be skipped. Stopping treatment too early without medical guidance may increase relapse risk even if the pain has improved. New symptoms such as fever, dyspnea, palpitations, or near-fainting should be noted carefully. For people whose work or sport involves high physical exertion, a safe return plan should be individualized. This approach helps limit cardiac strain and reduce the risk of recurrent pericarditis. ^[1][2][4]

Why is recurrent pericarditis important?

In some patients, symptoms may return weeks or months after the first episode. Recurrent pericarditis may lead to repeated pain flares, delays in returning to work, and diminished quality of life. When recurrence occurs, the diagnosis should be reviewed, adherence to treatment reassessed, and alternative causes excluded. That is why follow-up remains important even when symptoms improve. ^[1][4]

When should a doctor be consulted?

New-onset chest pain, especially when the cause is unknown, requires urgent medical evaluation. In people already diagnosed with pericarditis, worsening pain, increasing shortness of breath, palpitations, dizziness, near-fainting, or persistent fever are also reasons to seek care again. The most appropriate thing to do at home is to follow the prescribed treatment plan and keep follow-up appointments. Return to sports or heavy physical activity should not occur before symptoms and inflammation have clearly improved. In short, pericarditis is often manageable, but because chest pain can signal a serious condition and because complications or recurrence are possible, it should never be interpreted as benign without medical assessment. ^[2][3][4]

This content does not replace diagnosis; new or worsening symptoms require individualized medical evaluation. ^[1][2]

FAQ

Can pericarditis resemble a heart attack?
Yes. Because both can cause chest pain, new chest pain requires emergency assessment. ^[2][3]

Is pericarditis contagious?
Pericarditis itself is not considered a contagious disease, although infection may be the underlying trigger in some cases. ^[1][4]

Can pericarditis recur?
Yes. Some patients have recurrent episodes, which is why treatment and follow-up must be continued consistently. ^[1][4]

Can pericarditis cause shortness of breath?
Yes. Dyspnea may occur, especially if an effusion is present or if the pain worsens with breathing. ^[1][4]

Should sports be paused in pericarditis?
In many patients, strenuous activity is restricted until the inflammation has resolved. The decision should be individualized. ^[1][4]