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A 19-year-old female asked:

3 days in a row ive blood while bowel movement. today i saw cut on anus (psoriasis was also there). can blood be sign of anything contagious? can i avoid visiting doc and having colonoscopy done? (no other symptoms:doesnt hurt and have no burning).

1 doctor answer2 doctors weighed in
Dr. James Ferguson
Pediatrics 47 years experience
Some basics: Bright red blood found on the surface of poop is most likely fresh & from a cut/fissure/sore at the outlet. Darker maroon blood would come from higher up in the system & be more worrisome for a problem needing colonoscopy.Dark blood mixed within the poop can be from an infectious disease like salmonella but these are usually marked by diarrhea.
Last updated Oct 25, 2019

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