a spread that moves down the age scale, beginning with older or higher-status people īritish psychiatrist Simon Wessely distinguishes between two forms of MPI:.

symptoms that are spread via sight, sound or oral communication.

symptoms with rapid onset and recovery.

symptoms that are transient and benign.

symptoms that have no plausible organic basis.

Qualities of MPI outbreaks often include:

It is not well understood and its causes are uncertain. MPI is distinct from other types of collective delusions by involving physical symptoms. It is the rapid spread of illness signs and symptoms affecting members of a cohesive group, originating from a nervous system disturbance involving excitation, loss, or alteration of function, whereby physical complaints that are exhibited unconsciously have no corresponding organic causes that are known. Mass psychogenic illness ( MPI), also called mass sociogenic illness, mass psychogenic disorder, epidemic hysteria, involves the spread of illness symptoms through a population where there is no infectious agent responsible for contagion. Headache, dizziness, nausea, abdominal pain, cough, fatigue, sore throatĬhildhood or adolescence, intense media coverageĪctual diseases, mass delusions, somatic symptom disorder

Mass hysteria, epidemic hysteria, mass sociogenic illness, mass psychogenic disorderĭancing plagues of the Middle Ages are thought to have been caused by mass hysteria. Medical condition Mass psychogenic illness

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