Huntington’s Disease Society of America Help for Today. Hope for Tomorrow. HDSA Mission — The Society is a National, voluntary health organization dedicated to improving the lives of people with Huntington’s Disease and their families. To promote and support research and medical efforts to eradicate Huntington’s Disease. To assist people and families affected by Huntington’s Disease to cope with the problems presented by the disease. To educate the public and health professionals about Huntington’s disease.