A young woman covering her ears as her alarm goes off Rhythmic movement disorder is a rare motor disorder that results in frequent night sleep disturbances. Rhythmic movement disorder (RMD), a rare ...

A 10-month-old St. Johns girl is fighting a movement disorder so rare her doctors believe she may be the only one who has it, her moms said. Arlo's mothers, Ricci and Cortney Stollsteimer, are ...

Tic disorders are conditions featuring sudden, non-rhythmic movements or vocalizations. A formal tic disorder diagnosis is determined by tic frequency, duration, and type. Tics are non-rhythmic ...