As Ed Is Falling Asleep, His Legs Begin to Tingle

Multiple Choice

As Ed is falling asleep, his legs begin to tingle and then to ache.In order to relieve this painful prickly sensation, he begins to move his legs.This happens several times during the night, dramatically disturbing his sleep.Ed's sleep problem is most likely

A) hypnic jerk syndrome.
B) somnambulism.
C) restless legs syndrome.
D) REM behavior disorder.