<prompt> Subcoical dementia is seen in all exceptParkinsonismAlzheimers diseaseWilsons diseaseHuntingtons chorea  <response>: Coical dementia, ex: Alzheimers disease, Picks disease. Site of lesion is Coexfrontal temporoparieto-occipital association areas, hippocampus. Subcoical dementia, ex: Huntingtons chorea, Parkinsons disease, progressive supranuclear palsy, Wilsons disease. Site of lesion is subcoical grey matterthalamus, basal ganglia, rostral brain stem. Reference: A sho textbook of Psychiatry by Niraj Ahuja, 7th edition, page 24. 