What is the cause of diarrhea after drinking alcohol: first, allergic to alcohol diarrhea symptoms, if allergic to alcohol, there may also be abdominal pain, abdominal distension, nausea, vomiting, the whole body skin redness or rash phenomenon. Second, it is possible that ethanol directly stimulate the gastrointestinal mucosa, causing gastrointestinal tract peristalsis increased, so the symptoms of diarrhea. Third, there may be the existence of gastrointestinal tract disease, drinking alcohol will aggravate gastrointestinal tract disease, which will cause diarrhea symptoms. Fourth, the process of drinking alcohol or drinking alcohol after the diet is not appropriate, the abdomen is cold, so the phenomenon of diarrhea. It is recommended to drink alcohol in moderation, limited, not a large amount of alcohol, not a long time to drink, so as not to affect the health of the body, for the drinking of alcohol after the emergence of severe diarrhea, the need to go to the hospital in a timely manner.