The possible causes of sweating, nausea and diarrhea are: 1, acute gastroenteritis. If the patient is suffering from sweating, nausea, diarrhea, dizziness, chest tightness, dyspnea, etc., it is possible that the reaction is caused by nerve dysfunction, and the discomfort can disappear after removing the trigger. The symptoms are: nausea, vomiting, etc.