Diarrhea symptoms may exist several times a day and may be caused by physiological factors such as eating too much ice cream or pathological factors such as irritable bowel syndrome and lactose intolerance. 1. Physiological factors: overeating, consuming too much cold food such as ice cream and iced drinks, wearing too thin clothes, eating spicy hot, fried chicken, beer, strong tea and other stimulating foods, stimulating the gastrointestinal mucosa, resulting in bloating, abdominal pain, diarrhea and other symptoms. 2. Pathological factors: Irritable bowel syndrome can be caused by mental, psychological, genetic, environmental and other factors resulting in intestinal hypersensitivity, intestinal autonomic nerve disorders and other phenomena, diarrhea, constipation, nausea, loss of appetite and other symptoms. Lactose intolerance is an intestinal allergy caused by the lack of lactase enzyme that causes diarrhea, rash, nausea, vomiting and other intestinal allergy symptoms after consuming milk and other foods containing lactose. Several times a day stool may also be gastroenteritis, intestinal tumors and other causes, it is recommended that patients seek medical attention to clarify the diagnosis, under the guidance of the doctor for targeted treatment.