How long does acute myocarditis last?

The course of acute myocarditis is generally 5-7 days.

Acute myocarditis is a heart disease, usually caused by viral infection, bacterial infection, allergic reaction, drug poisoning or other diseases. Clinical manifestations include chest pain, difficulty breathing, arrhythmia, edema and Fatigue, etc. The natural course of acute myocarditis is 5-7 days. The condition is severe within 24-72 hours after onset, and patients may experience significant impairment of heart function. If not treated promptly, it can cause heart failure. After the severe stage, the condition can slowly improve and enter the recovery stage. Recovery time is usually 1-3 months, and patients with low immunity may take longer.