Several soft, semi-formed stools each day or frequent, watery stools throughout the day and even the night is generally called diarrhea. For people in the Western World, the usual amount of water in stool each day is generally no more than 200 ml or 7 oz. (8 oz. = 1 cup). When it is consistently more than this, it is called diarrhea in the medical field.
There are many causes of diarrhea. Fortunately, in most instances, this change in bowel habits is short lived and clears up on its own. In these cases, it is assumed that it is a virus infection or even “something I ate.” Whenever diarrhea lasts more than two or three weeks, medical advice is generally recommended. Among the many known causes are: