Alzheimer's disease is a progressive form of dementia strongly associated with old age. Down Syndrome is a congenital condition that leads to intellectual disab...learn more »
Amyotrophic lateral sclerosis (ALS) affects the voluntary nervous system that causes muscles to weaken, leading progressively to paralysis and death, usually wi...learn more »
A head injury occurs when some learn more »
Dementia is a blanket term to describe significant cognitive and memory decay that could be caused by a number of different conditions. A stroke is a bleed or b...learn more »
Decline in mental processes is a common complication of HIV infection (and many other conditions).
Although the specific symptoms vary from person to pers...learn more »