Transporter psychosis
From Star Trek : Freedom's Wiki
Rare medical disorder caused by a breakdown of neurochemical molecules during transport. Transporter psychosis was first diagnosed in 2209 by researchers on the planet Delinia II. The condition affected the body's motor functions, as well as autonomic systems and higher brain functions. Victims were found to suffer from paranoid delusions, multi-infarct dementia, tactile and visual hallucinations, and psychogenic hysteria. Peripheral symptoms included sleeplessness, accelerated heart rate, myopia, muscular spasms, and dehydration. The problem was eliminated around 2319 with the development of the multiplex pattern buffer.