"I thought it was just an ordinary eating bad stomach. I didn't expect it to be so serious." When it comes to acute myocarditis caused by diarrhea, 17-year-old Kobayashi still has lingering palpitations. On the evening of February 8, Kobayashi had symptoms of vomiting and diarrhea. Three or four days after buying and taking it by himself, the symptoms did not alleviate, and he also had symptoms such as panic, chest tightness and weakness. His family rushed him to the hospital. In the emergency department of the fourth hospital of Wuhan, the doctor diagnosed Xiao Lin with "acute myocarditis" after careful examination. After emergency treatment, Kobayashi was out of danger. It's clearly "gastroenteritis". How can it become "myocarditis"? According to Dr. Xu Biao of the emergency department of the hospital, myocarditis refers to that the myocardium is invaded by viruses and bacteria, which inflames the muscle layer of the heart and affects the amount of blood that the heart can discharge. Common Coxsackie virus, influenza virus and other viruses may "attack" the myocardium and cause myocarditis. Most patients with viral myocarditis only show fever, sore throat, general muscle pain or vomiting and diarrhea in the early stage of onset; At the same time, when suffering from myocarditis, the necrotic myocardial tissue will also appear epigastric pain, nausea and vomiting by stimulating the vagus nerve. The symptoms are like a cold or acute gastroenteritis, which is difficult to attract the attention of patients. Early viral myocarditis can be treated completely, but if you don't have enough rest or diagnosis and treatment in time, it is easy to develop into severe viral myocarditis, which is very dangerous and even induce sudden death. Dr. Xu Biao reminded that if the symptoms of cold or gastroenteritis are serious, and there are a series of manifestations such as palpitation, chest tightness, shortness of breath, diarrhea, nausea and vomiting, or abnormal cardiac manifestations occur within 3 weeks after virus infection such as cold and diarrhea, we should be alert to the possibility of viral myocarditis and should go to the hospital for relevant examination immediately. (outlook new era)