I don't have the book with me right now but maybe someone else does. But the Crohn's & Colitis Foundation book about IBD you can get for free on their web site talks about arthritis with Crohn's. There were two different broad types they talked about. I believe it was PERIPHERAL Arthritis and CENTRAL arthritis. One is degenerative (meaning over time, it'll affect the joints) whereas the other one is NOT degenerative. I can't remember which is which but it was very informative.
I've tested negative for RA but my ankles swell up to the size of lemons when I'm in a Crohn's flare. I can't walk or drive for about 2 weeks. If I didn't have Crohn's, this would be called some other kind of arthritis; but because I do have Crohn's, it's classified as Crohn's arthritis (otherwise, my ankles wouldn't be swelling). My Rhuemy told me joint arthritis affects the joints and can be obviously seen on an X-ray. However, the problem I have with the swollen ankles has nothing to do with my joints - it's actually the tendons that connect to my joints that are becoming inflamed. This problem will NOT show up on an X-ray but will show up on an MRI. So my "type" of "Crohn's Arthritis" falls under the broad "Spondylitis" category of arthritic diseases. I believe I fall under AS, Ankylosing Spondylitis.
Diagnosed in October, 2004 at age 32.
Current Rx's: Colazal (generic), Omeprazole, Ferrous Sulfate, Librax, One-A-Day multivitamin, Probiotic, Omega-3 Fish Oil, Vitamin D, Vitamin A, Calcium-Magnesium-Zinc, Cranberry pills
Secondary conditions: mouth ulcers, joint pain, swelling ankles, extreme fatigue
Previous/occasional Rx's: 20mg Prednisone taper, Flagyl, Levaquin
No surgeries to date