Pericarditis

What Is Pericarditis?

Pericarditis is inflammation of the pericardium, the thin, double layered sac that surrounds the heart and helps hold it in place within the chest. When this sac becomes irritated or inflamed, its normally smooth layers can rub against one another, producing the sharp chest pain that most people associate with the condition.¹

Pericarditis can occur as a single, isolated episode, known as acute pericarditis, or it can recur repeatedly over months or years in a pattern called recurrent pericarditis. Some patients experience ongoing, low grade inflammation that persists for weeks despite treatment, a pattern sometimes referred to as incessant pericarditis.²

In the developed world, between fifty and eighty percent of acute pericarditis cases have no clearly identified cause and are presumed to result from a viral infection that was never specifically confirmed. This category is generally referred to as idiopathic pericarditis, and it represents by far the most common form of the condition.¹

The sharp chest pain associated with pericarditis occurs when the irritated layers of the pericardium rub against each other.
National Center for Biotechnology Information

Symptoms

The hallmark symptom of pericarditis is sharp, stabbing chest pain, typically felt in the center or left side of the chest. This pain often intensifies when taking a deep breath, coughing, swallowing, or lying flat, and it frequently improves when sitting up and leaning forward, a pattern that helps distinguish it from other causes of chest pain.²

Many patients also experience a low grade fever, general weakness, and fatigue, particularly when the underlying cause is a viral infection. A preceding flu like illness, with symptoms such as fever or upper respiratory congestion, is common in the days before pericarditis symptoms begin.¹

Additional symptoms can include heart palpitations, a dry cough, and shortness of breath, especially when lying down. In more severe cases involving significant fluid accumulation around the heart, swelling in the abdomen or legs may also develop.²

Causes

Viral infection is the most commonly identified specific cause of pericarditis when a cause can be determined at all. Coxsackieviruses, echoviruses, adenoviruses, parvovirus B19, and various herpesviruses, including Epstein Barr virus, have all been linked to the condition.¹

Autoimmune conditions represent another significant category of causes, in which the body’s own immune system mistakenly attacks pericardial tissue. Growing evidence suggests that abnormal immune responses play a meaningful role even in cases initially triggered by a viral infection, particularly in patients who go on to develop recurrent episodes.²

Less common causes include bacterial, fungal, or parasitic infections, kidney failure, certain cancers that spread to the pericardium, traumatic chest injury, recent heart surgery, and reactions to specific medications. In each of these categories, the underlying mechanism ultimately leads to the same inflammatory process within the pericardial sac.¹

Risk Factors

A recent viral illness is among the most significant risk factors for developing pericarditis, given how frequently the condition follows a flu like prodrome. Young and middle aged adults are diagnosed with acute pericarditis more often than older adults, though the condition can occur at any age.¹

People who have already experienced one episode of pericarditis face a meaningfully increased risk of recurrence, particularly if their initial treatment involved corticosteroids, which have been associated with a higher likelihood of the condition returning compared with other treatment approaches.³

Recent heart surgery, chest trauma, autoimmune disease, kidney failure requiring dialysis, and certain cancers all raise the likelihood of developing pericarditis through mechanisms distinct from the more common viral or idiopathic pathway.¹

Complications

Pericardial effusion, an accumulation of excess fluid within the pericardial sac, is a common accompaniment to pericarditis and can range from a small, clinically insignificant amount of fluid to a large collection that compresses the heart.⁴

Cardiac tamponade represents a serious and potentially life threatening complication in which fluid accumulates rapidly or in large enough quantity to compress the heart and prevent it from filling properly between beats. This condition requires urgent drainage of the fluid, typically through a procedure called pericardiocentesis.³

Constrictive pericarditis, a less common but more chronic complication, occurs when the pericardium becomes thickened, scarred, and rigid over time, restricting the heart’s ability to expand normally. Myopericarditis, in which inflammation extends beyond the pericardium into the heart muscle itself, is another recognized complication that can affect overall heart function.¹

Treatment

Nonsteroidal anti inflammatory drugs, including high dose aspirin or ibuprofen, are generally the first line treatment for acute pericarditis, helping to reduce both pain and the underlying inflammation. Colchicine is typically added alongside NSAID therapy, since combining the two has been shown to speed symptom resolution and meaningfully reduce the risk of recurrence.⁵

Corticosteroids are sometimes used when NSAIDs and colchicine cannot be tolerated or are insufficient, though they are generally avoided as a first choice due to their association with a higher rate of recurrent episodes, particularly when used early in the course of treatment or at high doses.³

For patients with frequent recurrences that do not respond adequately to standard therapy, interleukin one inhibitors have emerged as an effective option, targeting the specific inflammatory pathway believed to drive recurrent disease in many patients. Cardiac tamponade requires urgent pericardiocentesis to remove excess fluid and relieve pressure on the heart.³

Prevention

Combination therapy with NSAIDs and colchicine during an initial episode substantially reduces the risk of pericarditis returning. Studies have found that the recurrence rate can exceed fifty percent in patients who are not appropriately treated with this combined approach during their first episode.⁵

For constrictive pericarditis specifically, prompt and adequate drainage of significant pericardial effusions through pericardiocentesis appears to lower the likelihood of the pericardium later becoming thickened and scarred, though colchicine itself has not shown clear benefit for preventing this particular complication.³

Because most cases of pericarditis follow a viral illness, general measures that reduce the risk of common viral infections, including good hand hygiene and staying current with recommended vaccinations, offer some indirect protection against the most frequent trigger of the condition.¹

Why Visual Communication Matters for Pericarditis

Most patients have never heard of the pericardium before receiving this diagnosis, and explaining why inflammation of a thin sac around the heart can cause such sharp, distinctive chest pain requires a clear anatomical picture that words alone rarely provide. Understanding the difference between simple inflammation, fluid accumulation, and the more serious complication of tamponade also depends heavily on visual explanation.¹

Pharmaceutical companies, cardiology practices, and patient education organizations rely on accurate illustration and animation to explain pericardial anatomy, the mechanisms behind pericarditis, and how each treatment approach addresses the underlying inflammation.

• Illustrating pericardial anatomy and how inflammation causes characteristic chest pain
• Animating the progression from pericarditis to effusion and, in severe cases, cardiac tamponade
• Explaining the mechanism of action for NSAIDs, colchicine, and interleukin one inhibitors
• Visualizing pericardiocentesis and how fluid is safely drained from around the heart
• Supporting patient education on recognizing recurrence and seeking timely care
• Creating training materials for clinicians on diagnosing and managing recurrent pericarditis

How Biotic Artlab Supports Pericarditis Communication

We collaborate with pharmaceutical companies, cardiology practices, and patient advocacy organizations to create clear, accurate visuals that make pericardial disease and its treatment understandable for patients and clinicians alike.

• Custom 3D animations of pericardial anatomy and inflammatory processes
• Detailed illustrations comparing pericarditis, effusion, and cardiac tamponade
• Mechanism of action animations for anti inflammatory and biologic therapies
• Patient facing educational materials on symptoms and recurrence prevention
• Clinical training content on pericardiocentesis and management of recurrent disease
• Conference presentations and marketing visuals for cardiology audiences

Frequently Asked Questions

What does pericarditis chest pain feel like?

It is typically sharp and stabbing, felt in the center or left side of the chest, and often worsens with deep breathing, coughing, or lying flat while improving when sitting up and leaning forward.²

Is pericarditis contagious?

Pericarditis itself is not contagious, though the viral infections that often trigger it can be. Most people who catch a common virus never develop pericarditis, and the reasons some people do remain an active area of research.¹

How long does pericarditis usually last?

Most cases of acute pericarditis improve within a few weeks with appropriate treatment. Some patients experience recurrent episodes over months or years, while a smaller number develop a more persistent, ongoing form of the condition.²

Can pericarditis cause permanent heart damage?

Most cases resolve completely without lasting effects. However, a small proportion of patients develop constrictive pericarditis, in which the pericardium becomes thickened and scarred, potentially requiring surgical treatment to restore normal heart function.¹

Why is aspirin used to treat pericarditis if it also thins the blood?

At the high doses used for pericarditis, aspirin primarily works as an anti inflammatory medication rather than for its blood thinning effect, helping to reduce both the pain and the underlying inflammation of the pericardium.⁵

What should someone do if pericarditis symptoms come back?

Recurrent chest pain consistent with pericarditis should prompt a call to a physician, since recurrence is common and typically requires the same combination of anti inflammatory medication and colchicine used for the initial episode, sometimes with additional therapy if episodes continue.⁵

Have a Project in Mind? Contact Us.

If you are developing patient education materials, clinical training content, or marketing visuals related to pericarditis or cardiac inflammation, our team can help translate the science into visuals that are both accurate and easy to understand. Contact us at info@biotic-artlab.com or get in touch through our contact form to discuss your project.

References

1. National Center for Biotechnology Information, StatPearls. Pericarditis.
2. American Heart Association. Recurrent Pericarditis.
3. American Heart Association. Treatment of Pericarditis.
4. National Center for Biotechnology Information, StatPearls. Pericardial Effusion.
5. American Heart Association. Prevention and Treatment of Pericarditis.

Disclaimer: This page provides general educational information and is not a substitute for diagnosis, treatment, emergency care, or individualized advice from a qualified healthcare professional.