Tarantism

Tarantism ( TERR-ən-tiz-əm) is a form of hysteric behaviour originating in Southern Italy, popularly believed to result from the bite of the wolf spider Lycosa tarantula (distinct from the broad class of spiders also called tarantulas). A better candidate cause is Latrodectus tredecimguttatus, commonly known as the Mediterranean black widow or steppe spider, although no link between such bites and the behaviour of tarantism has ever been demonstrated. However, the term historically is used to refer to a dancing mania – characteristic of Southern Italy – which likely had little to do with spider bites. The tarantella dance supposedly evolved from a therapy for tarantism.