Bristol Stool Scale

  The Bristol Stool Form Scale or Bristol Stool Chart is a classification of the form, that is appearance in a toilet, of human feces into seven groups. It was developed by Dr. K. Hering at the University of Bristol and was first published in the British Medical Journal in 1990.^[1] The form of the stool depends on the time it spends in the colon.^[1]

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Chart contents

Types 1 and 2 indicate constipation, types 3 and 4 are usually the most comfortable to pass, types 5-6 tend to be associated with urgency and type 7 is diarrhea.^[2]

References