"Dancing mania (or choreomania,[1] from the Greek: χορεία (khoreia = ‘dance’) + μανία (mania = ‘madness’) was a social phenomenon that occurred primarily in mainland Europe between the 14th and 18th centuries; it involved groups of people, sometimes thousands at a time, who danced uncontrollably and bizarrely. Men, women, and children would dance through the streets of towns or cities, sometimes foaming at the mouth until they collapsed from fatigue."