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A member asked:
I hit my knuckle with a 3lbs dumbbell while trying to work out. it scraped off some skin tissue and swelled up to form a marble sized bubble.
A doctor has provided 1 answer
Most likely edema: Most likely post traumatic swelling that will resolve with ice and time. If does not resolve could be a mucous cyst arising from an injury to the joint capsule.
Answered 1/23/2018
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