Häftiga, återkommande benrörelser i sömnen som leder till korta uppvaknanden och hindrar en ihållande sömn. Störningen ger ett tillstånd av sömnbrist som yttrar sig som onormal sömnighet (hypersomni) under dagtid. Rörelserna kännetecknas av upprepade sammandragningar av den främre skenbensmuskeln (tibialis anterior), sträckning av tån och återkommande böjning av höfte, knät och fotleden.
Excessive periodic leg movements during sleep that cause micro-arousals and interfere with the maintenance of sleep. This condition induces a state of relative sleep deprivation which manifests as excessive daytime hypersomnolence. The movements are characterized by repetitive contractions of the tibialis anterior muscle, extension of the toe, and intermittent flexion of the hip, knee and ankle. (Adams et al., Principles of Neurology, 6th ed, p387)
Periodiska benrörelser under sömnen — Sömnmyokloni
Myoclonus Syndrome, Nocturnal — Nocturnal Myoclonus Syndromes — Syndrome, Nocturnal Myoclonus — Periodic Leg Movements, Excessive, Sleep-Related — Sleep Myoclonus Syndrome — Myoclonus Syndrome, Sleep — Myoclonus Syndromes, Sleep — Sleep Myoclonus Syndromes — Syndrome, Sleep Myoclonus — Syndromes, Sleep Myoclonus — Periodic Movement Disorder, Sleep — Sleep Disorder, Periodic Movements — Sleep-Related Periodic Leg Movements, Excessive — Sleep Related Periodic Leg Movements, Excessive — Excessive Periodic Sleep-Related Leg Movements — Excessive Periodic Sleep Related Leg Movements — Periodic Limb Movement Disorder