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noun: hysteria; plural noun: hysterias
exaggerated or uncontrollable emotion or excitement, especially among a group of people.
"the mass hysteria that characterizes the week before Christmas"
synonyms:frenzy, wildness, feverishness, irrationality
a psychological disorder (not now regarded as a single definite condition) whose symptoms include conversion of psychological stress into physical symptoms (somatization), selective amnesia, shallow volatile emotions, and overdramatic or attention-seeking behavior. The term has a controversial history as it was formerly regarded as a disease specific to women.