I don't know if your problem is related to meds or UC. I do know that my last 6 months of having UC it manifested in a skin condition. I developed a lump on my finger that I had removed only to have it grow back. My doctor swore that it was a manifestation of my toxic colon. A few months later I had my colon removed and the lump went away within one week! I think my doctor was right.
I had j-pouch surgery 7 years ago. It was the best health decision I have made to date.