Alzheimer's disease is the most common cause of dementia. Dementia is a collective name for progressive degenerative brain syndromes which affect memory, thinking, behavior and emotion. The chemistry of the brain changes and cells, nerves and transmitters are attacked. Eventually the brain shrinks as gaps develop.

Symptoms may include:

• Loss of memory
• difficulty in finding the right words or understanding what people are saying
• difficulty in performing previously routine tasks
• personality and mood changes

Cognitive & Behavioral Symptoms 
 

Cognitive Symptoms

Behavioral Symptoms