It’s a case of six young people who, after taking drugs, got PD-like symptoms and froze/got paralyzed. They thought they were taking heroin or something similar, but they were really taking MPTP, so it was like a designer drug, cause they were trying to get MPPP. Their symptoms were very drastic and even after taking L-dopa, they would be worse anyway. At the time the book was written only 2 managed to live with the symptoms, one of them after undergoing a brain surgery, if I remember correctly.
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