Viral myocarditis.
D000208:Acute Disease; D000328:Adult; D000818:Animals; D003384:Coxsackievirus Infections; D004562:Electrocardiography; D005490:Focal Infection; D006801:Humans; D008297:Male; D008875:Middle Aged; D009132:Muscles; D009175:Mycoplasma Infections / Q000150:complications; D009205:Myocarditis / Q000150:complications / Q000209:etiology; D010146:Pain; D005082:Physical Exertion; D011379:Prognosis; D012282:Rickettsia Infections / Q000150:complications; D014777:Virus Diseases / Q000150:complications