(ALTS-hi-merz): Disease of the nervous system marked by a deterioration of memory, thinking, and reasoning.

(a-me-o-TROW-fik LA-ter-al skle-ROW-sis): Also known as Lou Gehrig's disease, a disease that breaks down motor neurons, resulting in the loss of the ability to move any of the muscles in the body.

(CAR-pal TUN-nel SIN-drome): Disorder caused by the compression at the wrist of the median nerve supplying the hand, causing numbness and tingling.

(EP-eh-lep-see): Disorder of the nervous system marked by seizures that often involve convulsions or the loss of consciousness.

Inherited, progressive disease causing uncontrollable physical movements and mental deterioration.

(MY-grain): A particularly intense form of headache.

Progressive disease in which cells in one of the movement-control centers of the brain begin to die, resulting in a loss of control over speech and head and body movements.

(po-lee-o-my-eh-LIE-tis): Contagious viral disease that can cause damage to the central nervous system, resulting in paralysis and loss of muscle tissue.