Hard bump between the 2 knuckles on index finger. It appeared suddenly last week & not going away. No pain and I just worked the 24 Hours of Daytona-I joke about it being a muscle developed working so hard for a week without doing anything like that for a long time.
Bump near the knuckles that is painless3 factors1)knuckles is near a joint it's called MCP joint2)its painless3) and you have a history of strenuous activity points out to a ganglion cystitis a non-cancerous fluid filled mass occurring near joints after trauma or strenuous activity if its not painful treatment is just plain observation it usually resolves on its own aspiration of the cyst can be an option but there's a 50% chance till go back