#insanity  relatively permanent disorder of the mind
  exclusion:  #sanity
  supertype:  #mental_illness__mental_disease__psychopathy  any disease of the mind; the psychological state of someone who has emotional or behavioral problems serious enough to require psychiatric intervention
  subtype:  #lunacy__madness__insaneness  obsolete terms for legal insanity
  subtype:  #dementia__dementedness  mental deterioration of organic or functional origin
     subtype:  #alcoholic_dementia__alcoholicdementia__alcohol_amnestic_disorder__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
     subtype:  #presenile_dementia__preseniledementia  dementia with onset before the age of 65
        subtype:  #Alzheimer's_disease__Alzheimer's__Alzheimers  a progressive form of presenile dementia that is similar to senile dementia except that it usually starts in the 40s or 50s; first symptoms are impaired memory which is followed by impaired thought and speech and finally complete helplessness
        subtype:  #Pick's_disease  a progressive form of presenile dementia found most often in middle-aged and elderly women and characterized by degeneration of the frontal and temporal lobes with loss of intellectual ability and transitory aphasia
     subtype:  #senile_dementia__senile_psychosis  dementia of the aged; results from degeneration of the brain in the absence of cerebrovascular disease
  subtype:  #irrationality__unreason  the state of being irrational; lacking powers of understanding
  subtype:  #mental_unsoundness__derangement__unbalance  a state of mental disturbance and disorientation
  subtype:  #daftness__craziness__crazines__flakines  informal terms for insanity

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