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The pH of human faeces is variable but the average is pH 6.6 for normal faeces. [1] [2] A lower faecal pH (very acidic stool) can indicate a digestive problem such poor absorption of carbohydrates or fats, [3] lactose intolerance, [4] an infection such as E. coli or rotavirus, or overgrowth of acid-producing bacteria (such as lactic acid bacteria).
The Bristol stool scale is a medical aid designed to classify the form of human feces into seven categories. Sometimes referred to in the UK as the Meyers Scale, it was developed by K.W. Heaton at the University of Bristol and was first published in the Scandinavian Journal of Gastroenterology in 1997. [4]
This is an accepted version of this page This is the latest accepted revision, reviewed on 10 January 2025. Medical system for classifying human faeces Medical diagnostic method Bristol stool scale Bristol stool chart Synonyms Bristol stool chart (BSC); Bristol Stool Scale (BSS); Bristol Stool Form Scale (BSFS or BSF scale); Purpose classify type of feces (diagnostic triad for irritable bowel ...
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It is most often due to long-term exposure of the anus to faeces, with reasons including diseases of the anus such as haemorrhoids, fistulas and fissures; poor hygiene or chronic diarrhoea; local infections such as tapeworm and thrush; or skin conditions such as psoriasis and contact dermatitis. If there is a specific cause identified, the ...
Meconium is the earliest stool of a mammalian infant resulting from defecation. Unlike later feces, meconium is composed of materials ingested during the time the infant spends in the uterus: intestinal epithelial cells, lanugo, mucus, amniotic fluid, bile, and water.
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Patients may use the Bristol Stool Chart to help them describe and characterise the morphological features of their stool, this is useful as it gives an indication of the transit time. [18] [non-primary source needed] An objective method used to evaluate the motility of the colon and help with diagnosis is the colon transit time.