mass hysteria

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mass hys·te·ri·a

1. spontaneous, en masse development of identical physical and/or emotional symptoms among a group of people, as seen in a classroom of schoolchildren;
2. a socially contagious frenzy of irrational behavior in a group of people as a reaction to an event.

mass hysteria

n.
A condition in which a large group of people exhibit similar physical or emotional symptoms, such as anxiety or extreme excitement. Also called epidemic hysteria.

mass hysteria

The synchronous appearance in a group of individuals of signs and nonspecific physical symptoms of hysteria, for which no organic cause can be determined. It is transmitted among members of a group by “line of sight” and is more common in young females.

Clinical findings
Nausea, loss of consciousness, vertigo, headache, shortness of breath, fainting, screaming, shaking, crying, muscle weakness, hyperventilation; a general lack of symptoms in those sharing the same physical environment, but in a different timeframe—i.e., of temporal, and not spatial, significance.

mass hysteria

Psychiatry The 'transmission' of anxiety among a group of individuals

mass hys·te·ri·a

(mas his-ter'ē-ă)
1. Simultaneous identical physical or emotional symptoms among a group of people.
2. A socially contagious frenzy of irrational behavior in a group of people as a reaction to an event.
Synonym(s): mass sociogenic illness.