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A member asked:
Occasionally, when i'm standing, my knee cap will start bouncing up and down like it's cold or something. it's a pretty vigorous shake! what is that?
A doctor has provided 1 answer
Unusual response: This is a very difficult explanation but sometimes when the muscle is stressed it will pulsate and pull the kneecap up and down with it. This can be due to lack of exercise of the muscles and when stressed will cause the reaction. Also medications have an affect on the muscles and their contractions so this could have some affect. See your healthcare provider if persists. Good luck.
Answered 11/23/2017
2.5k views
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