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Mass hysteria or a chemical spill?
Famed environmentalist Erin Brockovich investigated this mass outbreak of Tourettes-like symptoms that affected mainly female students in a small US town during 2011 and 2012.
Although most paediatric neurologists diagnosed the varying symptoms as conversion disorders, there has been no established cause as to the outbreak of the mass psychogenic illness.
Theories include use of the legal high ‘Spice’, emotional stress, poor air quality – and a chemical spill of cyanide crystals and trichloroethylene that happened near the high-school grounds in the 70s…