When a person is nervous and restless, we tell him contemptuously that he seems to have the dance of St. Vitus or sambito. The origin of this expression is in the invocation was done in the middle ages san Vito - or Guiodo - against a serious nervous condition that received the name of this martyr. Characterized by involuntary movements and purposeless, this medical condition is known today as it Korea rheumatic or Korea Sydenham.segun the legend, St. Vitus, martyr in the year 303, suffered terrible convulsions caused by the torture to which he was subjected in Lucania ( 41 Italy;.