Most common CNS manifestation of HIV Infection is:: (A) Acute Meningitis, (B) Encephalopathy, (C) Vacuolar myelopathy, (D) Dementia
Answer is D. 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