Knuckle EXTREMELY sensitive?!

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We cannot know for sure, but it might be a jammed finger. You can probably figure it out yourself based on the symptoms. Pain, swelling, loss of motion, and loss of strength are all very common symptoms of a jammed finger. Swelling within the joint is very obvious, and you can usually tell very easily when you have suffered a finger sprain.

One knuckle will swell up, and it will look noticibly bigger than the others. Unfortunately, this swelling often lasts for weeks if not months. Sometimes it never completely goes away.

Motion usually come back fairly quickly, depending on how severe the sprain is.

http://www.sports-injury-info.com/jammed…