Most common CNS manifestation of HIV Infection is:

HIV Encephalopathy also called HIV - Associated dementia or AIDS dementia.   This is generally a late complication of HIV infection, it can be seen patients with CD4 count >350 cells.   HIV encephalopathy is a sub-cortical dementia while   .• Alzheimer's is a cortical dementia   Alzheimer's disease is the most common cause of dementia in elderly.   Most important risk factor for Alzheimer'^ disease is age