Mental retardation

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Mental retardation
Classification and external resources
ICD-10 F70.-F79.
ICD-9 317-319
DiseasesDB 4509
eMedicine med/3095 neuro/605
MeSH D008607

Mental retardation (MR) is a generalized disorder, characterized by significantly impaired cognitive functioning and deficits in two or more adaptive behaviors with onset before the age of 18. It has historically been defined as an Intelligence Quotient score under 70.[1] Once focused almost entirely on cognition, the definition now includes both a component relating to mental functioning and one relating to individuals' functional skills in their environment.


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