- Progressive chronic neurological disorder.- May develop @ any age- most common in 60s.
- No cure for disease.
- Therapy aimed at controlling symptoms.
- Signs and symptoms relate to damaged neurons in the basal ganglia of the brain.
Theories of causes?
-Viral infection.
- Blows to the head.
- Brain infection.
- Atheroslerosis.
- Exposure to drugs and environmental factors.
Causes of signs and sypmtoms?
In substantia nigra, a dopamine-rich area in the brain, nerve cell bodies begin to degenerate, resulting in a reduction of the number of impulses sent to the corpus striation in the basal ganglia.