A 29-year-old female asked:
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i am feeling repeated muscles tighten, spasm and relax when sleeping. felt most in sides, arms and legs. no hx of epilep, interaction between meds?

1 doctor answer
Dr. Alan Heldman
32 years experience Cardiology
Hypnagogic jerk: A sudden muscle twitch while falling asleep is very common, and is called a hypnagogic jerk. There is a theory that this is a leftover reflex; a primate falling asleep whose muscles relax too much might fall out of a tree, and so we wake up to grab a limb. Drug interactions can cause or worsen lots of issues, and to help you figure that out would require a detailed history (including which meds?)
Answered on Feb 19, 2017
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