Another diagnosis of presenile demential is made by a physician including but not limited to: 1) Huntington Disease, 2) Parkinson Disease/Diffuse Lewy Body Disease, 3) Familial Alzheimer Disease with known mutations in presenilin 1, presenilin 2 or beta-amyloid precursor protein, 4) Lafora Body Disease, 5) Pick's Disease, and 6) fronto-temporal dementia.