Inexplicable diarrhea is considered to be caused by improper diet, may also be caused by irritable bowel syndrome, enteritis and other diseases. 1. Improper diet: If you don’t pay attention to diet, consume too much spicy and stimulating food or overeating, it will cause diarrhea, abdominal pain and other symptoms, thus causing inexplicable diarrhea. 2. Irritable bowel syndrome: the cause of irritable bowel syndrome is not yet clear, including visceral hypersensitivity, abnormal gastrointestinal dynamics, etc., the patient will experience abdominal pain, diarrhea, constipation and other symptoms, which will lead to inexplicable diarrhea. 3. Enteritis: If you suffer from enteritis, you will also have inexplicable diarrhea. Typical symptoms of enteritis include abdominal pain, diarrhea, bloody stools, etc. The cause of the disease is related to pathogenic microbial infections, immune abnormalities and physical factors. If you often have inexplicable diarrhea, it is recommended to consult a doctor for a clear diagnosis.