Run Dmc star DARYL McDANIELS is secretly fighting a crippling disability that could cost him his voice.

The MY ADIDAS rapper has discovered he has the neurological disorder spasmodic dysphonia, which causes involuntary spasms of his vocal cords.

McDaniels first noticed his voice problems when RUN DMC recorded their final album CROWN ROYAL, but it took and army of medics and experts to pinpoint what his problem was.

He says, "I'm living with a physical disability that affects my voice. I'm fighting to overcome it, and so I'm letting everybody know what I'm going through. It doesn't have me, I have it."

The condition means McDaniels' voice often becomes little more than an inaudible mumble.

12/01/2004 21:31