Scar?: Maybe you had some type of injury to the knuckle. A scar line from abrasion might be the raised line. Or it maybe a normal skin fold line over the knuckle area. Chip fractures of the bone could cause pain for two months. See a doctor for exam and Xray. A specialist such as a hand Orthopedic surgeon if it is still a problem.
Answered 9/13/2017
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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