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Myocarditis is inflammation of the heart muscle (myocardium). The inflammation can reduce the heart's ability to pump blood. Myocarditis can cause chest pain, shortness of breath, and rapid or irregular heart rhythms (arrhythmias).
Infection with a virus is one cause of myocarditis. Sometimes a drug reaction or general inflammatory condition causes myocarditis.
Severe myocarditis weakens the heart so that the rest of the body doesn't get enough blood. Clots can form in the heart...
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Some people with early myocarditis don't have symptoms. Others have mild symptoms.
Common myocarditis symptoms include:
Myocarditis may be caused by infections, some drugs and chemicals, or a condition that causes body-wide inflammation. Often, the cause of myocarditis isn't found.
Potential causes of myocarditis include:
Viruses. Many viruses have been linked to myocarditis, including those that cause the common cold (adenovirus); COVID-19; hepatitis B and C; parvovirus, which causes a mild rash, usually in children (fifth disease); and herpes simplex virus....
Often, myocarditis improves on its own or with treatment. Myocarditis treatment focuses on the cause and the symptoms, such as heart failure.
People with mild myocarditis may only need rest and medication. Medications to treat myocarditis may include:
Some people with myocarditis may need medications for just a few months and then recover completely. Others may have long-term, permanent heart damage that needs lifelong medicati...
There's no specific prevention for myocarditis. However, taking these steps to prevent infections might help:
For informational purposes only and not a substitute for professional medical advice, diagnosis, or treatment.
© Mayo Clinic
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