I had a ganglion cyst when I was younger. I don't remember any injury that could have caused it, just extremely painful. Started as a small swollen lump and eventually got so bad I couldn't close my fist. My doctor refused to treat for a long time said it was mild arthritis (I was 12!). I finally got it surgically removed when I was 15. No pain since.
I had this! My orthopedic doc showed me that I was holding my pens too tightly. I teach writing and had a death-grip on the pens I was using to correct papers. He suggested I switch to fat pens and pens with soft wraps. I did and the pain/swelling disappeared over a short time.
Now, I'm very aware of how I'm holding my pens.
Good luck!
Hi, this could be tenosynovitis which is inflammation of sheath that surrounds the tendon. Do you have history of injury? Try anti inflammatory drugs along with antibiotics for 5 days and in case no relief is seen, do consult doctor. Better use crepe bandage for immobility.
For more information visit http://www.emedicine.com/emerg/topic571.htm