Alzheimer's disease, vascular dementia, dementia with lewy bodies, mixed dementia and Parkinson's disease are common types of dementia. Frontotemporal dementia, Creutzfeldt-Jakob disease, Huntington's disease and Wernicke-Korsakoff syndrome are also types of dementia, according to the Alzheimer's Association.
Dementia is a group of symptoms accompanied by specific diseases or conditions, claims WebMD. It occurs when memory, learning, language and decision making areas of the brain are affected due to disease or injury.
Dementia is split into two major categories: cortical and subcortical dementia, says WebMD. Alzheimer's and Creutzfeldt-Jakob disease are part of cortical dementia, while Huntington's and Parkinson's disease are part of subcortical dementia.