Back of hand tendonitis(?)

[marshvet]

I am a new diver with an apparent recurrent scuba injury. Last year on one of my dives, I noted shortly afterwards a pain in the back (Not palm) of my hand. It was severe enough that I had trouble putting gloves on for a subsequent dive. I had no idea how it happened. It slowly dissipated and since I did no more diving for the season, it slowly went away never to return. This past weekend I went diving for the first time this season (I had heart surgery) and again without any known cause, the back of my hand did the same but much worse. I have significant swelling this time. I did dive dry both times; it is only on my right hand (both times) and I have absolutely no clue. Anyone out there with an answer or similar occurrence?

Thanks,

Marshall