Question: what are the rare types of dementia?
Answer: Atypical Alzheimer's disease. — Frontal variant Alzheimer's disease (fvAD) ...  CADASIL. Corticobasal syndrome (CBS) Creutzfeldt–Jakob disease (CJD) HIV-associated neurocognitive disorder (HAND) Huntington's disease. Normal pressure hydrocephalus (NPH) Progressive supranuclear palsy (PSP)