<s>[INST] I have crohns and am anally bleeding bright red blood and dark clots.  I am trying to figure out the source of the blood and therefore its seriousness. Is there a difference in color between blood that is coming from my internal system and blood from hermorrhoids? [/INST] Hello, Thank you for your contact to Chat Doctor. I understand your health concern, if I am your doctor I suggest you that yes there is difference between the two. One whicChatDoctore out of the hemorrhoid are fresh and bright red blood. One can out from the internal system as a Crohn's disease in you can cause black and partially digested blood. This difference will help you to diagnose the condition exactly and so help you in management. I will be happy to answer all your future concern. Thank you, ChatDoctorInfectious disease specialist. Wish you the best health at Chat Doctor. </s>