Pericarditis treatment begins with confirming what is causing your chest pain and checking whether inflammation has affected the heart or caused fluid to collect around it. Acute pericarditis is inflammation of the sac around the heart. Its pain can be sharp, worse when you breathe deeply or lie flat, and eased by sitting up or leaning forward. But those clues cannot safely distinguish it from a heart attack or other emergency.
Why Pericarditis Pain Can Resemble A Heart Attack
Pericarditis pain is often described as pleuritic: it changes with breathing. It may also worsen when lying down and improve when sitting forward. These patterns can point a clinician toward pericarditis, but they do not prove it. Heart attack and pericarditis can both cause chest pain and changes on an electrocardiogram (ECG), so a clinician must assess for both rather than relying on how the pain feels.
If you have new, severe, or unexplained chest pain, seek urgent medical assessment. Call your local emergency number for severe pain, fainting, collapse, or significant difficulty breathing. Do not try to confirm the cause at home or take leftover anti-inflammatory medicine instead of being assessed; that could delay care for a heart attack or another serious condition.
How Clinicians Confirm Pericarditis Diagnosis
Clinicians generally diagnose acute pericarditis when at least two of four features are present: characteristic chest pain, a pericardial friction rub heard on examination, typical ECG changes, or a new or worsening pericardial effusion (fluid around the heart). A friction rub can be highly specific, but it may come and go, so not hearing one does not rule out pericarditis.
An ECG may show widespread ST-segment elevation or PR-segment depression. These findings help, but they are not a stand-alone answer. Blood tests can look for inflammation and heart-muscle injury; a raised troponin, for example, can suggest that the heart muscle is involved too. Echocardiography, an ultrasound scan of the heart, is recommended to assess fluid and look for complications such as tamponade, in which pressure from fluid interferes with the heart’s ability to fill and pump. Other imaging may be considered if the diagnosis remains unclear.
Pericarditis Treatment Depends On Risk And Cause
For many uncomplicated cases, a clinician prescribes a nonsteroidal anti-inflammatory drug (NSAID) to reduce inflammation and pain. Colchicine is commonly added to help lower the risk of recurrence; it is not a reason to self-treat, since the appropriate medicines and plan depend on your health and other medications. Follow-up matters: symptoms, inflammation, and treatment response may need review, and medicines should not be stopped or adjusted without guidance.
Corticosteroids are generally not the first choice for routine acute pericarditis. They may be considered in selected situations, such as when first-line treatment cannot be used or when a systemic inflammatory condition is involved. The suspected cause also matters. Most cases in the UK and similar settings are described as idiopathic or presumed viral, while tuberculosis is an important cause in some regions. If a specific cause is suspected, clinicians may need to investigate and treat it directly.
A pericardial effusion does not automatically mean a procedure is needed. Its size, cause, and effect on heart function guide the decision. Tamponade requires urgent hospital care and may require fluid drainage. Larger effusions or suspected infection or cancer may also prompt specialist assessment.
When Hospital Assessment May Be Needed
Hospital evaluation is more likely when there are features linked to a higher-risk course: fever above 38°C (100.4°F), a gradual or subacute onset, a large effusion or tamponade, or no response to NSAID treatment after about a week. Clinicians also take account of possible heart-muscle involvement, immune suppression, recent trauma, anticoagulant use, and a history of cancer. These factors do not establish a complication by themselves; they signal that closer investigation or monitoring may be appropriate.
Seek emergency help if chest pain comes with fainting, collapse, marked breathlessness, or rapidly worsening weakness. These symptoms can have several causes, but they need prompt assessment rather than watchful waiting. If you are being treated for pericarditis and symptoms worsen or fail to improve, contact your care team promptly. Only a clinician can assess whether the diagnosis, treatment, or level of monitoring needs to change.
