Swelling on my left hand. Something.

It's been more than 5-6 years, there's this swelling on my left hand, sometimes It appears sometimes it goes away, sometimes it pains, sometimes I don't even know that it exists. 5-6 years back I got X ray for this as well, and also took an orthopedic consultation for the same, but it was of no use. I'm not sure what is it. I'm a patient of Ulcerative colities I get admitted alot, I have to rush to emergency room whenever there's severe unbearable pain so the problem arises when the hospital nurses have to insert IV cannula. Having seen the swelling they don't even consider this hand. I'm not sure if I have to worry about it or not as it's been quite a time and at times it does pain as well. Kindly recommend something .