The lump on your husband's finger could be a node (Heberden's node). This is painless and does not affect movement. Usually, this is associated with other disease conditions like osteoarthritis.
It would be best to have him seen by a rheumatologist for proper evaluation.
I agree. He should see a rheumatologist. I have had a lump (giant cyst) on my right ring finger. I had surgery to remove it TWICE and it came back a 3rd time. I have no idea what causes it to return; however, the cause of it was from a "pin *****" prior to giving blood. When the cotton on my finger was removed, there was a very small lump/swelling. Unfortunately, it grew and grew. Within a year it had to be removed. It grew back a few years later to the point where I had it removed again. It has now been 4 years since my last surgery and it's huge. Good luck in your case:-)
Erica, the lump could also be a ganglion (in this region of the finger they are often called mucous cyst). They are harmless, but can be a nuisance. As mentioned before, best to be checked just in case
Have a look at this page on hand lumps:
I have a lump on my right ring finger it's hard to put my ring on and take off it looks like a wart but my daughter had a wart before and she said it didn't hurt mine does any comments on what it could be
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