ALZHEIMER'S DISEASE IN SHORT - 2

The progressive diminution of blood flow in the brain produces atrophy and destruction of the brain tissue.

 Normal brain arteries

 Normal brain arteries

Arteriosclerosis is a disease of aging producing a progressive hardening and narrowing of brain arteries.

Arteriosclerosis, which cause is unknown, develops randomly in different areas of the brain.

Arteriosclerosis of the cerebral arteries is a general phenomenon associated with dementia.

Depending on the location of the vascular involvement generally associated with dementia, the symptoms will be those of "Alzheimer's disease," vascular dementia, or "Parkinson's disease."

Different areas of the brain can be affected. In the beginning, the destruction of the brain involves specific regions.

For example, "Alzheimer's disease" is a form of dementia characterized by progressive memory loss overtime associated with secondary lesions as senile plates, amyloid deposits, and immune reactions. This pathology affects the amygdala and hippocampus in the depths of the brain.

For example, tremors characterize "Parkinson's disease."This pathology affects the substantia nigra that is a basal ganglia structure located in the midbrain.