| Summary: | Alzheimer's disease is defined as premature aging of the brain, usually beginning in mid adult life and progressing rapidly to extreme loss of mental powers--similar to that seen in very old age. The clinical features of Alzheimer's disease include 1. an amnesic type of memory impairment, 2. deterioration of language, and 3. visuospatial deficits. Motor and sensory abnormalities, gait disturbances, and seizures are uncommon until the late phases of the disease. One consistent finding in Alzheimer's disease is loss of neurons in the part of the limbic pathway that drives the memory process. Loss of this memory function is devastating.
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