I got ulcerative colitis, and I bleed some times from my back in Ramadhaan. Does that break my fasting?

All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger. We ask Allaah to exalt his mention as well as that of his family and all his companions.

The blood that comes out of a fasting person unwillingly whether from his private parts or from any part of his body does not break fasting unless it is [regarding women] menses or blood that comes out of a woman after giving birth. Therefore, if this blood came out of you while fasting in Ramadan or other days, your fasting is accepted and you do not have to make up for such a day. 

Allaah knows best.