The Bristol Stool Form Scale provides illustrations of the seven stool types, which can be used to help fill out the stool diary.
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|Type 1||Separate hard lumps, like nuts|
|Type 2||Sausage-shaped but lumpy|
|Type 3||Like a sausage or snake but with cracks on its surface|
|Type 4||Like a sausage or snake, smooth and soft|
|Type 5||Soft blobs with clear-cut edges|
|Type 6||Fluffy pieces with ragged edges, a mushy stool|
|Type 7||Watery, no solid pieces|
Text reproduced with permission from Lewis SJ, Heaton KW, Scandinavian Journal of Gastroenterology, 1997; 32(9):920–924. ©1997 Informa Healthcare.
Page last updated: July 15, 2011