Posted 8/7/2013 11:03 AM (GMT -6)
Crohn's (granulomatous) colitis: This form of Crohn's disease involves only the colon. Symptoms include skin lesions, joint pains, diarrhea, rectal bleeding, and the formation of ulcers, fistulas, and abscesses around the anus.
There can be overlap between these types of Crohn's disease. Some people have more than one area of the digestive tract affected.
As mentioned in the above google search, the formation of fistulas and abscesses isn't written in stone as I luckily have never had either but I do have perianal crohn's skin tags on the outside of my anus...I've also had rectal involvement (similar to UC) but it's still crohn's--my pattern of inflammation indicates CD as do the perianal crohn's skin tags on my anus. I've also had my CD affecting my TI, colon, rectum and anus (anal tags I mentioned) all at the same time so as mentioned, the 5 subtyped of CD can overlap as they have for me.
With CD, there's always a chance for it to spread anywhere throughout the GI tract since that is commonly the nature of the disease, but many will have issues mainly in one area and may never have issues in other areas...it's not possible to guarantee anything when it comes to CD in regards to if it will stay where it's at or affect other areas as well.