Mass psychogenic illness - Wikipedia, the free encyclopedia
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’Mass psychogenic illness (MPI), also called mass sociogenic illness,[1] 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 aetiology.”[2] MPI is distinct from other collective delusions, also included under the blanket terms of mass hysteria, in that MPI causes symptoms of disease, though there is no organic cause. The DSM-IV-TR does not have specific diagnosis for this condition but the text describing conversion disorder states that "In ’epidemic hysteria,’ shared symptoms develop in a circumscribed group of people following ’exposure’ to a common precipitant."
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It typically occurs as an alteration product at the contact between felsic and mafic or ultramafic rocks such as pyroxenites and dunites. It also occurs in carbonatites and metamorphosed magenesium rich limestone. Associated mineral phases include: corundum, apatite, serpentine and talc. It occurs interlayered with chlorite, biotite and phlogopite.[2] Vermiculite Wikipedia, the free encyclopedi...
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تاریخ انتشار 2012