When the patient has diarrhea, it means that there are infections in the gastrointestinal tract. After an infection or treatment with antibiotics, the gastrointestinal tract is prone to dysbiosis, which brings about disorders in gastrointestinal function. Diarrhea is good, but the old fart is related to the discomfort after the infection, but also may be itself complicated with irritable bowel syndrome, chronic gastritis and other diseases. 1. Gastrointestinal dysfunction: when the patient has diarrhea, it mostly represents the existence of gastrointestinal infections, and after an infection or the use of antibiotics and other medications, the gastrointestinal tract is prone to bacterial imbalance, which will bring about gastrointestinal dysfunction. This is manifested by increased exhaust, abdominal pain, bloating and other discomforts, and at this time it is necessary to use probiotics to regulate the intestinal flora to assist in the treatment. At the same time may also be accompanied by dyspepsia, the patient will appear epigastric pain, epigastric burning sensation, postprandial fullness and other symptoms, the cause of the disease and genetics, infections, the environment and psychological factors related to the situation, some patients may also appear to have an increase in exhaust. It can be combined with the use of mitochondrial pancreatic enzyme tablets and other aids in digestion. 2. Irritable bowel syndrome: Irritable bowel syndrome is a common functional gastrointestinal disease, patients will experience abdominal pain, bloating, abdominal discomfort and other symptoms, often accompanied by increased exhaust. Its etiology is not yet clear, and is currently believed to be caused by the interaction of multiple factors. 3. Chronic enteritis: chronic enteritis is caused by a variety of factors, such as biological factors, immune factors, physical factors, etc., the patient will appear epigastric discomfort, fullness, belching (hiccups) and other symptoms, the majority of patients will also appear to have an increase in anal exhaust. Diarrhea well, but the old fart more causes, it is recommended to seek medical examination, clear cause.