Restless Legs Syndrome (RLS) or Periodic Limb Movements (PLM)

RLS and PLM cause a person's legs or other limbs to jerk or move during sleep, which disrupts sleep and results in excessive fatigue during the day.

  • The jerks typically occur every 20 to 40 seconds.
  • RLS causes a crawling or tingling sensation in the legs that is only relieved by moving the legs.