An inherited degenerative neuropsychiatric disorder which is caused by a dominant gene on an autosome. Symptoms include chorea (involuntary dancelike movements), clumsiness, slurred speech, depression, irritability, apathy, and losses of attention span, short-term memory and intellectual speed. Symptoms typically begin between the ages of 30 and 50 (though they can start at any other time), and not all individuals will have the same symptoms. Symptoms are treated as they appear. There is currently no cure. For more information, visit Caring for People with Huntington's Disease and Facing Huntington's Disease: A Handbook for Families and Friends.