<prompt> All of the following are causes of subcoical dementia exceptAlzheimers diseaseParkinsons diseaseHIV associated dementiaHuntingtons chorea  <response>: Coical Dementias Early Presentation of 4As Amnesia, Apraxia, Aphasia, Agnosia, Acalculia Seen in: Alzheimer Disease Creutzfeldt Jacob Disease Picks disease other Frontotemporal Dementia. Sub-coical Dementia Involves Sub-coical Structures Like Basal Ganglia, Cerebellum, Brain Stem Nuclei first Present with motor symptoms e.g. Tics, Chorea, Dysahria Executive function disturbance and BPSD First Seen in : Parkinsons Ds Wilsons Ds Huntingtons Ds, Progressive Supra-nuclear palsy Mixed presentation - Vascular Dementia, Dementia with Lewy Body 