[A case of cholinergic crisis with persistent watery diarrhea].

The patient was a 79-year-old man who visited our hospital with the chief complaint of persistent watery diarrhea. This symptom and his general condition aggravated during the planning of colonoscopy, and he was admitted to the intensive care unit. Large-volume fluid replacement, vasopressor administration, and artificial respiration management were performed;however, circulatory dynamics did not improve.