November 1st 2006
Huntington disease (HD) is a devastating hereditary, degenerative brain disorder for which there is, at present, no effective treatment or cure. More than a quarter of a million Americans have HD or are at risk for the disease because of potential genetic transmission. The disease slowly diminishes the affected person's ability to walk, think, talk, and reason. As it progresses, concentration and short-term memory diminish and involuntary movements of the head, trunk, and limbs increase.