mass sociogenic illness

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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 sociogenic illness

n.
An illness occurring in a group of people with a shared social setting, such as a school, workplace, or military group, and characterized by a usually rapid onset and symptoms such as nausea, dizziness, fainting, headache, or skin rash.

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 sociogenic illness

Epidemic hysteria The occurrence of a group of nonspecific physical symptoms for which no organic cause can be determined, which is transmitted among members of a group by 'line of sight'; MSI is more common in ♀, and characterized by headache, nausea, weakness, dizziness, hyperventilation, and fainting, a general lack of Sx in those sharing the same physical environment, but in a different timeframe

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.
References in periodicals archive ?
Due to this likelihood of mass panic and sociogenic illness, school counselors must respond immediately to a bioterrorist incident in their own school.
Mass sociogenic illness (MSI) is the occurrence of a group of nonspecific physical symptoms for which no organic cause can be determined and that is transmitted among members of a group by "line of sight.
An epidemiologic investigation by Orange County public health officials and the Florida Department of Health and Rehabilitative Services concluded that this outbreak was the result of mass sociogenic illness (MSI).