Myocarditis is an inflammation of the heart’s muscular wall, the myocardium. Although rare, it can be devastating. Myocarditis can occur with no symptoms and remain undiagnosed.
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Many cases of myocarditis have no identifiable cause. This is called idiopathic myocarditis. When a cause is identified, it falls into one of 3 categories:
- Infectious—bacterial, viral, or fungal
- Toxic—medications, or exposure to heavy metals, toxins, or physical agents (shock, radiation)
- Immune-mediated—allergic reactions, heart transplant rejection, or autoantigens (which may be present in autoimmune disorders)
Last reviewedDecember 2014by Michael J. Fucci, DO
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.