willddoMJ, I'm not a doctor so can't tell you about this disease. All I can do is advise you to go to your local library or doctor's office and pick up some leaflets. Or do what everyone else does and check Wikipedia. Of course it may not be accurate so a book from the library would be better. Here is a couple of links. You are not allowed to view links.
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Login Hope these are helpful and good luck with your speech.
