The St. Vitus Day dance occurred in the Middle Age and was characterized by large groups of people unwillingly, spontaneously dancing. What is one possible cause

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Mass psychogenic illness, also known as mass hysteria, is a phenomenon in which large groups of people experience physical or psychological symptoms that have no apparent explanation or cause. The St. Vitus Day dance is believed to be an example of this, where individuals were affected by a contagious dancing mania.

The St Vitus Day Dance Occurred in the Middle Age and and Was