This dance form is also known by other ethnoses, under names often derived from the Greek one, e.g., Khorovod in Russia, Hora in Romania, Moldova, and Israel, Horo in Bulgaria.
Major causes are Sydenham's chorea, Huntingtons Chorea, metabolic insults (elevated liver enzymes, elevated or lowered blood glucose levels) and stroke.
The name is derived from New Latin "chorea Sancti Viti", or St.Vitus's dance.