Myocarditis symptoms often mimic a viral infection or heart attack, commonly featuring chest pain, severe fatigue, shortness of breath (at rest or during exercise), and rapid or irregular heartbeats (arrhythmias). Other symptoms include swelling in the legs/ankles, fever, fainting, and flu-like symptoms like headaches or sore throat. Symptoms can range from mild to severe and may appear suddenly.

What is the number one cause of myocarditis?

The most common cause of myocarditis (inflammation of the heart muscle) is a viral infection, with viruses like the common cold (adenovirus), flu, coxsackievirus, parvovirus, and COVID-19 being frequent culprits, often occurring as a complication of another illness. While viruses are the leading cause, bacterial infections, parasites, autoimmune diseases, certain medications, and toxins can also trigger myocarditis, though less commonly.
 

Can myocarditis cause vomiting?

Many patients report flu-like symptoms (such as fever, fatigue, cough, nausea, vomiting, or abdominal pain) before onset of acute myocarditis. The most common cause of acute myocarditis is a viral infection (such as coronaviruses, influenza, and parvovirus B19).

How long does it take myocarditis symptoms to go away?

For example, in many healthy adults with uncomplicated coxsackievirus myocarditis, symptoms can start to improve over a couple of weeks; in other cases, the heart takes a few months to recover. Sometimes, the damage to the heart muscle is permanent, and heart failure persists even after the inflammation has resolved.

How to check for myocarditis?

Testing for myocarditis involves a combination of blood tests (for inflammation and cardiac enzymes like troponin), an electrocardiogram (ECG/EKG) to check heart rhythm, imaging tests like echocardiograms and cardiac MRIs to see heart structure/function, a chest X-ray for fluid, and sometimes a cardiac biopsy for definitive diagnosis, with PET scans also used for inflammation assessment. Doctors use these to look for inflammation, damage, and changes in the heart's pumping ability. 

Cardiologist explains Myocarditis

Is walking good for myocarditis?

A cardiologist can evaluate the severity of your myocarditis and recommend safe levels of physical activity. They may advise you to avoid high-intensity workouts, which can strain the heart, and instead suggest low-impact exercises, like easy walking, that promote heart health without causing harm.

What are four signs your heart is in trouble?

Shortness of breath can also be accompanied by swelling in the legs or ankles, fatigue, or difficulty lying flat without feeling breathless. If you notice any of these symptoms, it's important to consult a cardiologist for a thorough evaluation and diagnosis.

What are the stages of myocarditis?

At the cellular and tissue levels, the pathological progression of viral myocarditis consists of 3 stages: the acute stage triggered by viral entry and replication, the subacute stage characterized by inflammatory cell infiltration, and the chronic stage featuring cardiac remodeling.

What foods should you avoid with myocarditis?

Sugary drinks (sodas, energy drinks), candy, and desserts should be minimized to avoid triggering inflammation and heart strain. Processed meats, canned soups, and salty snacks should be limited, as excess sodium can contribute to high blood pressure and heart problems.

What is the hallmark of myocarditis?

Heart-Related Symptoms of Myocarditis

Shortness of breath, especially during physical activity or while lying down, may also occur. Swelling in the legs, ankles, or feet can indicate fluid retention caused by decreased heart function, a hallmark of myocarditis in more advanced cases.

What medication is used for myocarditis?

Some types of medicines that may be used to treat myocarditis symptoms are diuretics, beta blockers, angiotensin-converting enzyme (ACE) inhibitors or angiotensin 2 receptor blockers (ARBs). Medicines to treat chronic conditions. Sometimes another health condition, such as lupus, causes myocarditis.

What can be mistaken for myocarditis?

For example, myocarditis and heart conditions like heart failure share many symptoms, such as fatigue, shortness of breath, exercise intolerance, and difficulty breathing while lying down. Another example is that often myocarditis symptoms resemble those of a heart attack: chest pain and fatigue.

Is dizziness a symptom of myocarditis?

What are the symptoms of myocarditis? Typical symptoms of myocarditis include chest pain and sometimes fever. More rarely, children may experience palpitations, dizziness, or lightheadedness, or may pass out.

What is the gold standard for diagnosis of myocarditis?

Cardiovascular magnetic resonance imaging serves as the reference standard non-invasive test for the diagnosis of myocarditis.

Can heart trouble cause diarrhea?

Myocarditis is often challenging to diagnose and is often misdiagnosed. It can cause symptoms similar to a heart attack, such as chest pain and shortness of breath; stomach issues, such as vomiting and diarrhea; and weakness, lethargy, fever, among other common symptoms.

What triggers myocarditis?

Myocarditis, inflammation of the heart muscle, is most commonly triggered by viral infections (like flu, COVID-19, common cold) but can also stem from bacterial, parasitic, or fungal infections, autoimmune diseases (lupus, rheumatoid arthritis), reactions to certain drugs or toxins (chemotherapy, heavy metals, alcohol, cocaine), radiation exposure, or even post-strep rheumatic fever. The inflammation impairs the heart's ability to pump blood effectively.
 

How accurate is an EKG for myocarditis?

In patients with myocarditis, ECG can display a variety of abnormalities, none of which pathognomonic (Punja et al., 2010). Sensitivity of ECG for diagnosis of myocarditis is low and it is estimated at 47%, but specificity remains unknown (Cooper, 2009; Dennert, Crijns, & Heymans, 2008).

What are the morning warning signs of heart problems?

Ans. Early warning signs include persistent chest discomfort, unexplained fatigue, irregular heartbeats, breathlessness on mild exertion, and cold clammy skin, especially in the morning. Prompt recognition and action can be lifesaving.

What are three early warning signs your heart is failing?

Three early warning signs of heart failure are shortness of breath, persistent fatigue or weakness, and swelling (edema) in the legs, ankles, feet, or abdomen, often accompanied by rapid weight gain, as the heart struggles to pump blood effectively, leading to fluid buildup and decreased oxygen supply. Other key signs include a persistent cough, rapid heartbeat, or difficulty exercising.

What not to do if you have myocarditis?

Decreasing physical activity: Avoid rigorous athletic activities like heavy lifting or competitive sports for some time, often 3-6 months, to allow the heart to heal. Adjusting your diet: Eat heart-healthy foods like fruits, vegetables, nuts, and salmon.

What to do if you think you have myocarditis?

If you think you have symptoms of myocarditis, contact your doctor straightaway, or call NHS 111. Getting diagnosed and treated early can help you feel better and lower your risk of long-term complications.

What gets rid of myocarditis?

How to treat myocarditis. In cases of mild myocarditis, medication, rest, and recovery may be all that is needed for it to go away on its own. Antibiotics are often prescribed if an infection is the suspected cause of myocarditis.

---