dementia

1. Mental deterioration of organic or functional origin (synset 114418807)
   is a type of: insanity - relatively permanent disorder of the mind
   subtypes:

   • alcohol amnestic disorder, alcoholic dementia, korsakoff's psychosis, korsakoff's syndrome, korsakov's psychosis, korsakov's syndrome, polyneuritic psychosis - dementia observed during the last stages of severe chronic alcoholism; involves loss of memory for recent events although long term memory is intact
   • presenile dementia - dementia with onset before the age of 65
   • senile dementia, senile psychosis - dementia of the aged; results from degeneration of the brain in the absence of cerebrovascular disease
   same as: dementedness

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