Some people with early myocarditis don't have symptoms. Others have mild symptoms. Common myocarditis symptoms include:  Chest pain Fatigue Swelling of the legs, ankles and feet Rapid or irregular heartbeat (arrhythmias) Shortness of breath, at rest or during activity Light-headedness or feeling like you might faint Flu-like symptoms such as headache, body aches, joint pain, fever or sore throat  Sometimes, myocarditis symptoms are like a heart attack. If you are having unexplained chest pain and shortness of breath, seek emergency medical help. Myocarditis in children When children develop myocarditis, symptoms may include:  Breathing difficulties Chest pain Fainting Fever Rapid breathing Rapid or irregular heart rhythms (arrhythmias) 
people early myocarditis don't symptoms  mild symptoms  common myocarditis symptoms include:  chest pain fatigue swelling legs  ankles feet rapid irregular heartbeat (arrhythmias) shortness breath  rest activity light-headedness feeling like faint flu-like symptoms headache  body aches  joint pain  fever sore throat  sometimes  myocarditis symptoms like heart attack  unexplained chest pain shortness breath  seek emergency medical help  myocarditis children children develop myocarditis  symptoms may include:  breathing difficulties chest pain fainting fever rapid breathing rapid irregular heart rhythms (arrhythmias) 
myocarditis