pennywise asked
I just came across one called 'The Jumping Frenchman of Maine Disorder', which is: a genetic mutation that prevents 'exciting' signals in the nervous system from being regulated, which causes a number of bizarre irregularities in their startle response. Most notably, an event, which might startle a normal person, will result in an extended, grossly exaggerated response from a 'jumper,' including crying out, flailing limbs, twitching, and sometimes convulsions. Because a jumper is almost immediately susceptible to another jump soon after an episode ends, there have been reports that sufferers are sometimes teased mercilessly by people who find the reaction amusing, and trigger it repeatedly.
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