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n. A disorder characterized by an uncontrollable urge to dance, especially prevalent in southern Italy from the 15th to the 17th century and popularly attributed to the bite of a tarantula.

n. An extreme urge to dance, popularly thought to have been caused by the bite of a tarantula and prevalent in southern Italy in the 15th through 17th centuries.

n. A nervous affection producing melancholy, stupor, and an uncontrollable desire to dance. It was supposed to be produced by the bite of the tarantula, and considered to be incapable of cure except by protracted dancing to appropriate music.

n. A dancing mania; specifically and originally, a dancing mania of the south of Italy in those who had been bitten by a tarantula, or thought they had been, and their imitators.

n. a nervous disorder characterized by an uncontrollable impulse to dance; popularly attributed to bite of the southern European tarantula or wolf spider

"These effects consisted of a feigned or imaginary disease known as tarantism, which was prevalent in Apulia and other portions of southern Italy during the sixteenth and seventeenth centuries."

chorea   

tarentism