What is this hard, pea sized bump under my skin and on the underside of my middle finger?

Question describes it...





I have a small pea sized bump under the skin of the underside of my middle finger. It doesn%26#039;t hurt, it only does a little when applying pressure to it. I haven%26#039;t seen a doctor, and it almost feels like the ball joint of a bone, but that can%26#039;t be it. Any ideas? Thanks.|||It%26#039;s probably a ganglion cyst. If so, it%26#039;s harmless.|||Look it up on Webmd.com I think it%26#039;s a sign to some kind of condition that I read about.|||maybe a callus or a wart, you may want to see a doctor.|||It might be a cyst or a wart. Look it up in a medical book or online! Good luck.|||Its probably a writers bump, its just a calloused area that happens when you use a pencil or sometimes a pen for an extended period of time on a regular basis, I%26#039;ve had the same thing for years|||it might be a blood clot.. those are bad you should see a doctor





or it could be a wart|||It could be a broken blood vessel. If that%26#039;s what it is, put ice on it until it goes down. It%26#039;ll take a week or so.