<unk>  is the alteration of the volume, water content and frequency (≥ 3 episodes per day) of bowel movements for a duration of less than 14 days.  When the diarrhea lasts more than 14 days it is referred to as persistent diarrhea; and when it lasts more than 30 days it is considered as chronic.
Acute diarrhea
Acute abdominal pain
Chronic diarrhea
Brainerd diarrhea
Q fever
Abdominal angina
Acute pancreatitis
Acute abdomen