Welcome to the Huntington's Disease Society of America's circle of friends. Huntington's Disease (HD) is an affliction that affects 1 out every 10,000 Americans and touches the lives of many more people who love, care for and treat HD patients.

When you support HDSA, you join an ever-widening circle of family and friends who value HDSA's mission: to provide resources for care and treatment of people with HD and their families, fund research on HD and educate the public and healthcare professionals nationwide.

Visit, see and give to HDSA. You bring hope to everyone in the circle. Welcome.

Huntington's Disease (HD) is caused by a mutation on a chromosome which eventually leads to the death of cells in the region of the brain that controls movement and cognitive control. Symptoms vary from person to person, even within the same family. At later stages of HD, every individual affected by the disease requires full time care. That means that HD impacts more than the person affected; it changes life for family, friends, caregivers, medical professionals who treat the HD patient.