It could be nothing: for a 20 sears old healthy it could be nothing. if you play any sport,it could be a minor injury. if pain persisted you might need to see a doctor to make sure you are not experiencing the beginning of rheumatoid arthritis, you can take ibuprofen to see if that will make the pain go away. you might want to do some leg exercise specially to the quadriceps since it is the muscle that protect knee.
Answered 3/12/2015
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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