These troubles result from the residual diagnosis of MPI. Balaratnasingam and Janca report that the methods for "diagnosis of mass hysteria remain contentious." According to Jones, the effects resulting from MPI "can be difficult to differentiate from bioterrorism, rapidly spreading infection or acute toxic exposure." Research īesides the difficulties common to all research involving the social sciences, including a lack of opportunity for controlled experiments, mass sociogenic illness presents special difficulties to researchers in this field. For example, in the Singapore factory case study, calling in a medicine man to perform an exorcism seemed to perpetuate the outbreak. John Waller advises that once it is determined that the illness is psychogenic, it should not be given credence by authorities. The illness may also recur after the initial outbreak. Intense media coverage seems to exacerbate outbreaks. Bartholomew and Wessely state that it "seems clear that there is no particular predisposition to mass sociogenic illness and it is a behavioural reaction that anyone can show in the right circumstances." The hypothesis that those prone to extraversion or neuroticism, or those with low IQ scores, are more likely to be affected in an outbreak of hysterical epidemic has not been consistently supported by research. Inability to concentrate/trouble thinkingĪdolescents and children are frequently affected in cases of MPI. Jones of the Tennessee Department of Health compiles the following symptoms based on their commonality in outbreaks occurring in 1980–1990: Symptom 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." of the University of Maiduguri, Nigeria contest Wessely's definition and describe outbreaks with qualities of both mass motor hysteria and mass anxiety hysteria. While his definition is sometimes adhered to, others such as Ali-Gombe et al. Initial cases can be identified and the spread is gradual. It occurs in any age group and prior tension is present. Mass motor hysteria "consists of abnormalities in motor behaviour.Prior tension is absent and the rapid spread is by visual contact." Mass anxiety hysteria "consists of episodes of acute anxiety, occurring mainly in schoolchildren.a preponderance of female participants.īritish psychiatrist Simon Wessely distinguishes between two forms of MPI:.a spread that moves down the age scale, beginning with older or higher-status people.symptoms that are spread via sight, sound or oral communication.symptoms with rapid onset and recovery.symptoms that are transient and benign.
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