Huntington's Disease: a devastating, hereditary, degenerative brain disorder for which there is, at present, no cure and only one FDA-approved treatment (Xenazine) for a symptom of HD.. HD slowly diminishes the affected individual's ability to walk, talk and reason. Eventually, the person with HD becomes totally dependent upon others for his or her care. Huntington's Disease profoundly affects the lives of entire families -- emotionally, socially and economically. More...