How is periodic leg movements of sleep (PLMS) characterized in patients with restless legs syndrome (RLS)?

Updated: Feb 22, 2017
  • Author: Ali M Bozorg, MD; Chief Editor: Selim R Benbadis, MD  more...
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Answer

Approximately 85% of patients with RLS have periodic movements of sleep, usually involving the legs (periodic leg movements of sleep [PLMS]). [2] PLMS is characterized by involuntary, forceful dorsiflexion of the foot lasting 0.5-5 seconds and occurring every 20-40 seconds throughout sleep.


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