I poo blood

When I poo blood comes out.  What could this be?

Bloody poop, just like this troll.

Is it bright red or dark (sort of blackish)? would be the first question one should ask to determine if the bleeding it upper or lower GI.

Bright

Bright red = hemorrhoids
Dark black/brown = colorectal cancer

Enterohemmorhagic E. coli

>>3
Yeah, I saw that episode of House, too.

So, bright red blood indicates a lower GI problem (black would indicate upper because the blood would have time to get broken down in stomach acid, etc, etc and turn black). Your options are still many including IBD (inflammatory bowel disease) like Crohn's  or UC, ruptured internal hemorroids (could be external, but those are painful and u should've noticed), or some of the enteric bacteria (one shouldn't forget the worms either), there are still others on my ddx, but let's stop there for now.

tl;dr... next question is are you... constipated, have diarrhea, fever, abdominal pain?

>>1
AIDS

Kancer

>>1
Furrderdom

The gerbil is trying to claw its way out.

DIABEETUS

>>9
/thread