Clinical Features of Diabetic Diarrhea

Does the patient have longstanding insulin-dependent diabetes mellitus?

Does the patient have intermittent episodes of a watery diarrhea?

Are the episodes preceded by borborygmi and/or discomfort?

Is fecal incontinence worse at night?

Does the patient have gustatory sweating, postural hypotension or other symptoms of autonomic dysfunction?

Has a careful workup identified a cause for the diarrhea unrelated to diabetes?

Number of tests for autonomic function that are abnormal

Does a trial of oral tetracycline therapy improve symptoms?