Pericarditis: Chest Pain from Heart Lining Inflammation

Pericarditis is inflammation of the pericardium, the thin sac that surrounds the heart, and it often causes sharp chest pain that may change with position or breathing. Most cases improve with timely diagnosis, appropriate medication and follow-up, but chest pain should always be assessed by a qualified doctor.

Overview

Pericarditis is inflammation of the pericardium, the thin, two-layered sac that surrounds and protects the heart. A small amount of fluid normally sits between these layers, helping the heart move smoothly as it beats. When the pericardium becomes inflamed, the layers can rub against each other or fluid can build up, leading to chest pain and other symptoms.

Pericarditis may be acute, meaning it develops suddenly and lasts for a short time, or recurrent, meaning symptoms return after an initial episode. Some people develop a longer-lasting form called chronic pericarditis. In many cases, especially after viral illnesses, the condition improves with medication, rest and careful monitoring.

Because chest pain can have many causes, including heart attack, pericarditis should not be self-diagnosed. A doctor can distinguish pericarditis from other heart, lung and digestive conditions by reviewing symptoms, listening to the heart, ordering tests and checking for warning signs such as fluid around the heart.

Symptoms

The most typical symptom of pericarditis is sharp chest pain, often felt in the center or left side of the chest. It may spread to the shoulder, neck, back or upper abdomen. Many people notice that the pain becomes worse when lying flat, coughing, swallowing or taking a deep breath, and improves when sitting up or leaning forward.

Other symptoms can vary depending on the cause and severity of inflammation. Some people feel generally unwell, tired or feverish, especially if pericarditis follows a viral infection. Shortness of breath may occur, particularly when lying down, and palpitations or a sensation of a racing heartbeat can sometimes be present.

Symptoms that may suggest complications include increasing breathlessness, swelling of the legs or abdomen, dizziness, fainting, low blood pressure or a feeling of severe weakness. These symptoms can occur if fluid builds up quickly around the heart and affects how well the heart fills and pumps. Prompt medical evaluation helps identify and treat these situations safely.

Causes & Risk Factors

In many people, no single cause is confirmed; this is often called idiopathic pericarditis. Viral infections are considered a common trigger, particularly when symptoms appear after a cold, flu-like illness or other infection. Less commonly, bacterial infections, tuberculosis or fungal infections may be involved, depending on the patient’s health background and region of exposure.

Pericarditis can also occur after injury or irritation to the heart or pericardium. This may happen after a heart attack, heart surgery, catheter-based heart procedures or chest trauma. Certain medical conditions increase the risk, including autoimmune diseases such as lupus or rheumatoid arthritis, kidney failure, thyroid disease, cancer involving the pericardium and prior radiation therapy to the chest.

Some medicines can rarely contribute to pericardial inflammation, and people with weakened immune systems may be more vulnerable to infectious causes. A patient’s age, recent illnesses, medical history, travel or tuberculosis exposure, and previous cardiac procedures all help guide the doctor toward the most likely cause.

Diagnosis

Diagnosis begins with a careful discussion of the chest pain: when it started, where it is located, what makes it better or worse, and whether there are associated symptoms such as fever, shortness of breath or palpitations. During the examination, the doctor may listen for a pericardial friction rub, a scratchy sound that can occur when inflamed pericardial layers rub together.

Common tests include an electrocardiogram (ECG), which may show patterns typical of pericarditis, and blood tests that look for inflammation and heart muscle injury. These tests help separate pericarditis from other urgent causes of chest pain, such as a heart attack. Blood tests may also assess kidney function, infection markers or autoimmune clues when relevant.

Imaging is important in many cases. Echocardiography, an ultrasound of the heart, can show whether fluid has collected around the heart and whether heart function is affected. Chest X-ray, cardiac MRI or CT may be used when the diagnosis is unclear, when complications are suspected or when the doctor needs more detail about inflammation, thickening or fluid around the pericardium.

Treatment Options

Treatment depends on the cause, severity and risk of complications. For many uncomplicated cases, doctors prescribe anti-inflammatory medicines to reduce pain and inflammation. Colchicine is often used in suitable patients to reduce symptoms and lower the chance of recurrence. The choice of medicine must consider kidney function, stomach or bleeding risks, other medications and pregnancy status, so patients should not start or combine treatments without medical advice.

Rest is usually recommended during the active phase, especially avoiding strenuous exercise until symptoms and inflammation improve. Athletes and people with physically demanding routines may need specific guidance before returning to training. Follow-up appointments and repeat testing may be needed to confirm that inflammation and any pericardial fluid are resolving.

If pericarditis is caused by a bacterial infection, tuberculosis, autoimmune disease, cancer or kidney failure, treatment must address the underlying condition. Corticosteroids or other immune-modifying medicines may be considered in selected cases, especially when inflammation is severe or linked to autoimmune disease, but they are used carefully because they may not be appropriate for every patient.

When fluid around the heart becomes large or causes pressure on the heart, a procedure called pericardiocentesis may be needed to drain it. Rarely, recurrent or constrictive pericarditis may require specialized procedures or surgery. These decisions are individualized and usually involve cardiologists, imaging specialists and, when necessary, cardiac surgeons.

Prevention & Self-care

Not every case of pericarditis can be prevented, especially when it follows a viral illness or has no identifiable cause. However, general infection prevention can help reduce some triggers: regular hand hygiene, staying current with recommended vaccinations, avoiding close contact with people who are acutely ill when possible, and seeking care for infections that do not improve as expected.

People recovering from pericarditis should follow the treatment plan exactly and attend follow-up visits, even if pain improves quickly. Stopping medicines early or returning to strenuous exercise too soon may increase the risk of persistent or recurrent symptoms. Patients should ask their doctor when it is safe to resume work, sports, travel and other activities.

Helpful self-care includes getting adequate rest, staying hydrated unless fluid intake is restricted for another condition, and avoiding smoking. Patients should also tell their doctor about all prescription medicines, over-the-counter pain relievers, supplements and herbal products they use, because some may interact with pericarditis treatments or be unsafe with kidney disease, blood thinners or stomach ulcers.

• Take medicines only as prescribed and report side effects promptly.
• Avoid intense exercise until cleared by a doctor.
• Keep a record of chest pain patterns, fever, breathlessness and palpitations.
• Seek medical advice before using non-prescribed anti-inflammatory medicines.

When to See a Doctor

Any new, unexplained or severe chest pain should be assessed urgently, because it is not always possible to distinguish pericarditis from a heart attack or other serious condition based on symptoms alone. Emergency care is especially important if chest pain is accompanied by sweating, nausea, fainting, severe shortness of breath, pain spreading to the jaw or arm, or a feeling of pressure or heaviness in the chest.

People already diagnosed with pericarditis should contact their doctor if symptoms worsen, fever persists, breathlessness increases, legs or abdomen become swollen, or chest pain returns after improvement. These changes may indicate recurrent inflammation, increasing fluid around the heart or another condition that needs reassessment.

Patients with autoimmune disease, kidney failure, cancer, recent heart surgery or a weakened immune system should seek care early if pericarditis symptoms develop. Their evaluation may require more detailed testing and coordinated treatment. Acibadem International’s multidisciplinary specialists and JCI-accredited hospitals can diagnose and treat pericarditis for international patients, including cases requiring cardiology, imaging or surgical expertise.

Frequently asked questions

What does pericarditis chest pain feel like?

Pericarditis chest pain is often sharp and may be felt in the center or left side of the chest. It commonly worsens when lying down, coughing or taking a deep breath, and may improve when sitting up or leaning forward. Because chest pain can also be caused by a heart attack, it should be evaluated by a doctor.

Is pericarditis the same as a heart attack?

No. Pericarditis is inflammation of the lining around the heart, while a heart attack is caused by reduced blood flow to the heart muscle. However, symptoms and ECG changes can sometimes overlap, so medical tests are needed to tell the difference safely.

Can pericarditis go away on its own?

Some mild cases, especially after viral infections, may improve over time, but medical evaluation is still important. Doctors may prescribe anti-inflammatory treatment and monitor for fluid around the heart. Untreated or incorrectly treated pericarditis can persist or recur in some patients.

How long does recovery from pericarditis take?

Recovery varies depending on the cause, severity and response to treatment. Many uncomplicated cases improve over days to weeks, but inflammation may take longer to fully settle. Follow-up testing helps the doctor decide when it is safe to resume normal activity and exercise.

What is recurrent pericarditis?

Recurrent pericarditis means symptoms return after a symptom-free period following an initial episode. It can be frustrating, but many patients can be managed with adjusted anti-inflammatory treatment and careful follow-up. The doctor may look for underlying causes such as autoimmune disease or persistent inflammation.

Can exercise make pericarditis worse?

Strenuous exercise can worsen symptoms or prolong inflammation during active pericarditis. Most patients are advised to rest and avoid intense activity until chest pain, inflammation markers and imaging findings improve. Return to exercise should be guided by a healthcare professional.

Is fluid around the heart always dangerous?

A small amount of pericardial fluid can be normal, and mild fluid buildup may be monitored. The concern is when fluid accumulates quickly or becomes large enough to press on the heart, a condition that requires urgent care. Echocardiography helps doctors assess the amount of fluid and its effect on heart function.

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.