Presentations can be acute, subacute, or chronic, presenting with focal or diffuse involvement of the myocardium.
Presenting symptoms can be highly variable. They can include chest pain, shortness of breath, presyncope, syncope, or sudden cardiac death. Subacute myocarditis can present with subtle symptoms including fatigue, weight loss, or dyspnea on exertion. These symptoms can be acute or subacute.
Some patients will experience complete resolution of myocardial inflammation and subsequent injury, while others will have residual cardiac dysfunction with manifestations of congestive heart failure.
Diagnosis and treatment of the underlying cause is key to the management of myocarditis; treatment otherwise is generally supportive.
I51.4 – Myocarditis, unspecified
50920009 – Myocarditis
- Acute coronary syndrome
- Coronary artery disease
- Stress-induced cardiomyopathy (Takotsubo cardiomyopathy)
- Pulmonary embolism
- Aortic dissection
- Coronary artery vasospasm
- Pulmonary edema
- Dilated cardiomyopathy
- Peripartum cardiomyopathy
- Restrictive cardiomyopathy
- Pericardial effusion
- Anemia (see, eg, iron deficiency anemia)
- Chronic fatigue syndrome