Some of the Causes and Types of Dementia

Adenoleukodystrophy
AIDS-related dementia
Aluminum toxicity
Alzheimer's dementia
Amyotrophic B-cell lymphoma
Amyotrophic lateral sclerosis
Binswanger's disease
Cerebral arteriosclerosis
Cofactor insufficiency: cobalamin, folate etc
Corticobasal ganglionic degenerationv
Creutzfeldt-Jacob disease (prion disease)
Depression
Drug intoxication
Frontal dementia; frontotemporal dementia
Hippocampal sclerosis
Huntington's disease
Leukoaraiosis
Lewy body disease
Lyme disease
Mercury toxicity
Motor neuron disease
Multiple small infarct dementia
Multiple system atrophy
Normal pressure hydrocephalus
Olivopontocerebellar atrophy
Parkinson's disease
Pick's disease
Progressive supranuclear palsy
Seizure disorders
Senile dementia
Thyroid dysfunction
Vascular dementia
Viral meningitis
Wilson's disease