The common symptoms of myocarditis in children mainly include chest tightness, panic, chest pain, dyspnea, pale skin, abdominal pain, etc., which can cause death in severe cases. Myocarditis in children can be preceded by discomfort such as coughing, fever, vomiting and diarrhea, which in turn can lead to symptoms such as chest tightness, panic, chest pain, difficulty breathing, pale skin, abdominal pain and weakness. Symptoms are different for each child with myocarditis. Mild cases of myocarditis may have no clinical symptoms or only mild precordial discomfort and poor appetite. What you need to be alert to is the occurrence of severe myocarditis, because this disease develops rapidly, can appear chest pain, dyspnea, irritability, fainting, pale skin and other symptoms, and soon can be life-threatening, you need to rush to the hospital, to avoid a poor prognosis.