As a parent, hearing that your child has a heart-related condition can be frightening. One such condition is pericarditis. While the name sounds complex, pericarditis in children is often caused by common infections and is usually very treatable. Understanding what it is, what symptoms to look for, and how it’s treated can help ease your concerns.
This guide is designed for parents with no medical background, providing clear, simple information about pericarditis in children.
In this article, you will learn:
- What pericarditis is and how it affects the heart
- The most common causes in children
- The key signs and symptoms to watch for
- How doctors diagnose and treat the condition
- Potential complications and when to seek urgent care
- What the outlook is for a child with pericarditis
What Is Pericarditis in Children?
To understand pericarditis, it’s helpful to first know about the pericardium.
The pericardium is a thin, double-layered sac that surrounds the heart. Think of it like a protective, fluid-filled bag. It has two main jobs:
- It holds the heart in place within the chest.
- It contains a small amount of fluid that allows the heart to beat smoothly without friction against other organs.
Pericarditis is the inflammation (swelling and irritation) of this sac. When the pericardium becomes inflamed, the layers can rub against each other and against the heart muscle itself, causing chest pain. Sometimes, the inflammation also leads to extra fluid building up in the sac, a condition known as a pericardial effusion.
Common Causes of Pericarditis in Children
In many cases, doctors may not find the exact cause, which is called idiopathic pericarditis. However, when a cause is identified, it is most often one of the following:
Viral Infections (The Most Common Cause)
This is by far the most frequent trigger for pericarditis in children. The body’s immune response to a common virus can lead to inflammation of the pericardium. Viruses often responsible include:
- Coxsackievirus (which also causes hand, foot, and mouth disease)
- Influenza (the flu)
- Adenovirus (a cause of the common cold)
- COVID-19
- Epstein-Barr virus (which causes mononucleosis)
Bacterial Infections
Though much less common than viral causes, bacterial infections can lead to a more serious form of pericarditis. This can happen if an infection like pneumonia spreads to the pericardium.
Autoimmune Conditions
In some children, the immune system mistakenly attacks healthy tissues, including the pericardium. Conditions that can cause this include:
- Lupus
- Juvenile idiopathic arthritis
- Rheumatic fever
After Heart Surgery or Injury
A child who has had heart surgery can develop inflammation of the pericardium days or even weeks later. This is known as post-pericardiotomy syndrome. A direct injury to the chest can also trigger pericarditis.
Key Symptoms of Pericarditis to Watch For
The signs of pericarditis can sometimes be mistaken for other illnesses. However, there is one hallmark symptom that is a major clue for doctors.
Chest Pain (The Most Common Symptom)
This is not just any chest pain. The pain from pericarditis is often very specific:
- It is usually sharp and stabbing.
- It’s felt in the center or left side of the chest.
- It often gets worse when the child lies down, takes a deep breath, or coughs.
- It often feels better when the child sits up and leans forward.
This last point is a classic sign. If your child complains of chest pain that improves when they lean forward, be sure to mention this to a doctor.
Other Common Symptoms
Along with chest pain, your child might experience:
- Fever, which is usually low-grade.
- Fatigue and feeling unusually weak or tired.
- Irritability or poor feeding (especially in infants and toddlers who can’t describe their pain).
- Cough or trouble breathing.
- A rapid or pounding heartbeat (palpitations).
How Doctors Diagnose Pericarditis in Children
To determine if your child has pericarditis, a doctor will perform a combination of exams and tests.
Medical History and Physical Exam
The doctor will ask about recent illnesses (like a cold or flu) and the specific nature of your child’s chest pain. During the exam, they will listen to your child’s heart with a stethoscope. They are listening for a specific sound called a pericardial friction rub—a scratchy noise caused by the inflamed layers of the pericardium rubbing together.
Electrocardiogram (ECG or EKG)
This simple, painless test measures the heart’s electrical activity. Pericarditis can cause specific changes in the ECG patterns that help doctors confirm the diagnosis.
Echocardiogram (Heart Ultrasound)
This is a key test for diagnosing pericarditis. It uses sound waves to create moving pictures of the heart. An echocardiogram can show:
- If the pericardium looks inflamed or thickened.
- If there is extra fluid around the heart (pericardial effusion).
- How well the heart is pumping.
Chest X-ray
A chest X-ray can show the overall size and shape of the heart. If a large amount of fluid has collected in the pericardium, the heart might look enlarged on the X-ray.
Blood Tests
Blood tests can show signs of inflammation or infection in the body. Doctors often check levels of C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR), which are markers of inflammation.
Treatment for Pericarditis in Children
Treatment focuses on three main goals: relieving pain and inflammation, treating the underlying cause, and preventing complications.
Anti-Inflammatory Medications
The primary treatment for pericarditis is medication to reduce the swelling and pain:
- Nonsteroidal anti-inflammatory drugs (NSAIDs), such as ibuprofen, are the first choice.
- Colchicine is another medication that is very effective at reducing inflammation and helps prevent the pericarditis from coming back.
- Corticosteroids (like prednisone) may be used if the inflammation is severe or if other medications are not effective.
Rest and Activity Restriction
Rest is a crucial part of recovery. The doctor will likely recommend that your child avoids strenuous physical activity, including sports, for several weeks or even months until the inflammation has completely resolved.
Treating the Underlying Cause
If the pericarditis was caused by a bacterial infection, antibiotics will be prescribed. If it’s related to an autoimmune condition, treatment will focus on managing that specific disease.
Hospitalization
Most children with uncomplicated viral pericarditis can be treated at home. However, a child might be admitted to the hospital if they have severe pain, a high fever, a large amount of fluid around the heart, or if the doctor needs to monitor them closely.
Potential Complications
While most children recover fully without issues, doctors monitor for two main complications:
- Cardiac Tamponade (A Medical Emergency): This is rare but serious. It happens when too much fluid builds up in the pericardium and puts pressure on the heart. Go to the emergency room immediately if your child has chest pain along with severe trouble breathing, dizziness, fainting, or bluish lips.
- Recurrent or Chronic Pericarditis: For some children, the inflammation can come back weeks or months after the first episode. This is why medications like colchicine are so important.
Outlook for Children with Pericarditis
The good news is that the outlook for most children with pericarditis is excellent. The vast majority of cases, especially those caused by viruses, resolve completely with medication and rest. With proper follow-up care and adherence to activity restrictions, your child can return to their normal life and activities without any long-term heart problems.