epidemic hysteria

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.

Synonym(s): epidemic hysteria, mass sociogenic illness

epidemic hysteria

n.

See mass 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.