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Today's Terms
Alexander disease
Definition:
Alexander disease is considered one of the leukodystrophies, a group of disorders where the primary abnormality is the inability to maintain the fatty covering (myelin) that insulates nerve fibers in the brain. Alexander disease is a rare disorder of the nervous system that usually begins during infancy or early childhood.
vascular dementia
Definition:
A common form of dementia that results either from narrowing and blockage of the arteries that supply blood to the brain or by strokes that cause an interruption of blood flow within the brain.
hematoma
Definition:
A collection of blood within the brain or on its surface that can cause increased pressure, which can damage brain cells and interrupt blood flow.
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