Periumbilical pain with diarrhea may be caused by improper diet, cold, acute gastroenteritis, typhoid fever (illness caused by fever due to cold), cholera and other infectious diseases. 1. Physiological causes: Eating too much cold, spicy, rotten food, overeating, cold abdomen and other factors to stimulate the gastrointestinal tract, may lead to periumbilical pain with diarrhea. 2. Acute gastroenteritis: often due to unhygienic diet leading to bacterial and viral infection of the gastrointestinal tract, of which bacterial infection is the most common, causing gastrointestinal congestion, edema, oozing, and other inflammatory changes, which may lead to periumbilical pain accompanied by diarrhea. 3. Infectious diseases: If periumbilical pain with diarrhea inflammation, should also consider typhoid fever, cholera, dysentery and other infectious diseases, usually acute, severe diarrhea, severe abdominal pain. In addition to the physiological causes of periumbilical pain with diarrhea, you should go to the hospital, under the guidance of the doctor for treatment.