Huntington disease (HD) is a devastating disorder that destroys nerve cells (neurons) in parts of the brain. It also lowers levels of chemicals called neurotran...learn more »
Dementia is a progressive (gradually worsening) decline of mental abilities that disturbs "cognitive" functions such as memory, thought processes, and speech as...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 »
Alzheimer's disease (AD) is the most common form of dementia (see Dementia Overview for more information). The disease is progressive, and the brain degenerates...learn more »
Most diseases that cause dementia are progressive, which means that persons with the disease get worse over time. Unfortunately, no curative treatment for demen...learn more »
Head injury occurs when an outside force hits the head hard enough to cause the brain to move violently within the skull. This force can cause shaking, twisting...learn more »
Stroke (“brain attack”) is a disease of the blood vessels in and around the brain. It occurs when part of the brain does not receive enough blood to...learn more »
Dementia is a serious brain disorder that interferes with a person's ability to carry out everyday tasks.
The key feature of dementia is a decline in cogn...learn more »
Parkinson's isease (PD) is a degenerative disorder of the brain. It mainly affects movements of the body. Severe cognitive impairments associated with PD are a ...learn more »
Dementia is the loss of reasoning, memory, and other mental abilities. Dementia may be caused by irreversible as well as treatable causes. A variety of tests (b...learn more »