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dark patches in stool

A 21-year-old male asked:
Dr. Alan Steinbach
Specializes in Family Medicine
Be sure not blood: Hi YijunB Test to be sure its not blood. Many dietary items (skins of fruit or vegetables for example) can appear as dark blobs in otherwise formed s ... Read More

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A 20-year-old female asked:
Dr. M. Hytham Beck
43 years experience General Surgery
No but stay alert: the color of stool reflect what you eat so most of the time nothing to worry about. rarely in older population could represent a slow bleeding in yo ... Read More
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Dr. Kathy Robinson
32 years experience Family Medicine
Get checked: Stool color depends mostly upon what you eat. Dark brown stool is usually normal. If there is black in your stool then this can be a sign of bleeding ... Read More
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Dr. Frank Amico Jr
11 years experience Internal Medicine
Guiac: I would recommend you get your stool checked for blood. While I agree it can vary with your food intake, there is no sense in taking any chances. A he ... Read More
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A 18-year-old female asked:
Dr. Charles Cattano
39 years experience Gastroenterology
It could be,get help: Blood in stool is a warning sign. Brisk bleeding warrants emergency care. Causes of bleeding may be predictable (e.g. rectal trauma), but evaluation i ... Read More
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Dr. Heidi Fowler
25 years experience Psychiatry
Can't say: Eating beets can turn stool a reddish color. Red foods can occasionally cause dark stools. I am not sure what the black patches are from. Have you tak ... Read More
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A 23-year-old male asked:
Dr. Robert Uyeda
45 years experience General Surgery
Could be: but not likely. Postive FOBT is abnormal. You will know for sure after your colonoscopy tomorrow.
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A 28-year-old female asked:
Dr. Gurmukh Singh
49 years experience Pathology
Get tested: To clear doubt, you should get your stool tested for occult blood. You may be able to buy a kit at a drug store to do the test yourself at home. For g ... Read More
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A 34-year-old female asked:
Dr. Michael Samach
50 years experience Gastroenterology
Several possibilitie: Stool can be dark from iron pills pepto bismol (bismuth subsalicylate) or foods like spinach. Black tarry stools may indicate bleeding from the stomac ... Read More
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A 61-year-old male asked:
Dr. Jason Hemming
17 years experience Gastroenterology
Depends: If melena (black, tarry) this may represent bleeding. Otherwise likely a consequence of what you consumed.
A 31-year-old member asked:
Dr. Richard Bensinger
52 years experience Ophthalmology
Diet, blood: Stool will vary from light to dark depending upon the diet. Diets rich is red meat for instance will darken the stool color. If there is GI bleeding ... Read More
A member asked:
Dr. Marc Lewbart
19 years experience Emergency Medicine
Dietary sources: often time dark green stools are the result of diet. foods that have blue in them such as blueberries or other blue food coloring can cause dark gree ... Read More
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A 29-year-old female asked:
Dr. Robert Uyeda
45 years experience General Surgery
Things that make: black stools include iron, blood, bismuth, charcoal. There are many more things that can make for dark color.

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