Word: hyperekplexia
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Dates: during 1993-1993
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...Researchers have also discovered the faulty gene responsible for a rare disorder (hyperekplexia) that causes sufferers to become stiff as a board when startled. Afflicted infants can choke or suffocate, and adults can break bones when they topple over. The gene affects sites in the brain and spinal cord that help control muscle reflex...
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