What Causes Myocarditis?

  • Viral infections, including Coxsackie virus, measles, rubella, influenza, and polio-, adeno-, and echoviruses, are the most common cause of myocarditis in the United States.
  • Bacterial infection is a rare cause.
  • Parasitic infections such as trichinosis and toxoplasmosis (both rare in the United States)
  • Chagas’ disease, due to the parasite Trypanosoma cruzi (a common cause of heart disease in Central and South America).
  • Rheumatic fever
  • Lyme disease

Symptoms of Myocarditis

  • In many cases there are no symptoms.
  • Fatigue
  • Shortness of breath
  • Heart palpitations or rapid heartbeat
  • Fever
  • Chest pain
  • Joint pain or swelling
  • Leg swelling


Johns Hopkins Symptoms and Remedies: The Complete Home Medical Reference

Simeon Margolis, M.D., Ph.D., Medical Editor

Prepared by the Editors of The Johns Hopkins Medical Letter: Health After 50

Updated by Remedy Health Media

Publication Review By: the Editorial Staff at Healthcommunities.com

Published: 15 Nov 2011

Last Modified: 03 Sep 2015