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Cognitive disorders
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A class of psychological disorders characterized by impairment in cognitive abilities and daily functioning in which biological causation is either known or presumed
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Agnosia
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A disturbance of sensory perception, usually affecting visual perception
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Dementia
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Profound deterioration of mental functioning, characterized by impaired memory, thinking, judgment, and language use.
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Senile dementias
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Forms of dementia that begin after age 65
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Presenile dementias
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Forms of dementia that begin at or before age 65
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Amnestic disorders
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Disturbances of memory associated with inability to learn new material or recall past events or personal information
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Retrograde amnesia
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Loss or impairment of ability to recall past events
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Anterograde amnesia
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Loss or impairment of ability to form or store new memories
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Hypoxia
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Decreased supply of oxygen to the brain or other organs.
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Infarction
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The development of an infarct, or area of dead or dying tissue, resulting from the blocking of blood vessels normally supplying the tissue
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Korsakoff's syndrome
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A syndrome associated with chronic alcoholism that is characterized by memory loss and disorientation (also called alcohol-induced persisting amnestic disorder).
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Wernicke's disease
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A brain disorder, associated with chronic alcoholism, characterized by confusion, disorientation, and difficulty maintaining balance while walking
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Ataxia
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Loss of muscle coordination
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Alzheimer's disease
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A progressive brain disease characterized by gradual loss of memory and intellectual functioning, personality changes, and eventual loss of ability to care for oneself.
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Cerebrovascular accident (CVA)
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A stroke, or brain damage resulting from a rupture or blockage of a blood vessel supplying oxygen to the brain
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