Periodic limb movement disorder (PLMD) is a condition characterized by twitching, flexing, and jerking movements of the legs and arms during sleep. It’s sometimes referred to as periodic leg movement ...

Periodic limb movements of sleep (PLMS) is a sleep disorder that involves repetitive and involuntary movements of the limbs. Periodic limb movements occur when the arms or legs move during sleep. In ...

THE essential character of periodic movements as defined by Pfefifer is their being recurrent. All “repeated” movements, whatever their cause and mechanism may be, are periodic. Recurrent or periodic ...

While periodic limb movements in sleep (PLMS) and restless leg syndrome (RLS) are well-known in Parkinson disease, similar movements during wakefulness are not as well described. A recent case report ...