A member asked:

17 yrs boy. had blood in stool, have mucus. constipation/diarrhea always. bloated after eating. do i have bowel/stomach cancer? no heredity in family.

A doctor has provided 1 answer

Bright red ?: Bright red blood on the outside of a stool in a constipated person suggests a scratch/tear in the tissues of the outlet. (anal fissure) Dark blood mixed well within the stool suggests a bacterial infection like salmonella. Stomach cancer might trigger a bleed but would have coffee ground/black tarry stool.

Answered 1/26/2018

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