symptoms of "waxy facies" (a wax-like lack of expression),
tremor of the hands, dragging of the feet, slurred speech, and dementia.
It was a weird environment to grow up in, but I came to see these tragic
hulks of humanity as part of life. What was their disease? Treponema
pallidum, better known as syphilis. Interesting enough, these are also
the classic signs of Parkinson's disease.
My point is, just because two diseases have similar symptoms
doesn't mean they're the same disease. Two plus two doesn't always equal
four in the medical world.