Dementia: main causes VITAMIN D VEST: Vitamin deficiency (B12, folate, thiamine) Intracranial tumour Trauma (head injury) Anoxia Metabolic (diabetes) Infection (postencephalitis, HIV) Normal pressure hydrocephalus Degenerative (Alzheimer’s, Huntington’s, CJD, etc) Vascular (multi infarct dementia) Endocrine (hypothyroid) Space occupying lesion (chronic subdural haematoma) Toxic (alcohol)