Patients with myocarditis often exhibit early symptoms such as fever, cough, difficulty breathing, fatigue, and in severe cases, chest tightness and shortness of breath, even leading to shock or death, and syncope. Typically, the cough is not too severe, but if myocarditis is suspected, the patient should go to the hospital for timely diagnosis. Primary diagnostic tests include electrocardiogram, myocardial enzymes, and cardiac ultrasound. Once diagnosed, hospitalization for immediate treatment is necessary to prevent the condition from worsening. Because fulminant myocarditis can lead to death within days from minor symptoms, all myocarditis patients should be treated as severe cases and not be neglected.