Blood after bowel movement

[mtrman]

For at least a year or so now, I've had blood on the toilet paper after a bowel movement. It's not been every time, but at least 90 percent of the time. It's pretty much always just a minor amount, so I just assumed I was wiping too hard, and the sandpaper they put in the bathrooms at work doesn't help. Only a few times has it been more than just a smear of blood. 2 weeks or so ago, I did a little self exam and found an approx. 3/16" discoloration to the lower left of my anus. (think 7 oclock) When I stretch the skin, it separates and is clearly an open sore. It's not sore unless I've recently had a movement, then it kinda burns like its been aggravated, but stops after awhile. I had a full STD bloodtest last week, everything negative. What research I've done points to anal fissures, but the internet is only so helpful. Any suggestions, course of action or what not?

[Kevin Pho, MD]

Rectal bleeding can be caused by hemorrhoids, diverticulosis, an anal fissure, or more concerningly, a colon polyp or cancer.  The latter possibilities would be less likely at your age.

I would suggest an examination by your physician, and a possible flexible sigmoidoscopy or colonoscopy if the symptoms continue.

This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.

Kevin Pho, M.D.
www.kevinmd.com
www.twitter.com/kevinmd

[mtrman]

Don't know if it matters, but I'm a 28 year old white male.