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Article
November 1975

Rational Diagnostic Evaluation of the Child With Mental Deficiency

Author Affiliations

From the Dysmorphology Unit, Department of Pediatrics, University of Washington, Seattle.

Am J Dis Child. 1975;129(11):1285-1290. doi:10.1001/archpedi.1975.02120480015006
Abstract

• Evaluation of a mentally deficient child should be individualized, using findings from an appropriate history and physical examination. Depending on these findings the patient may be assigned to one of four subcategories, as determined by clinical indications and the patient's age at onset of the problem. These categories are (1) prenatal problem of morphogenesis, (2) perinatal insult to brain, (3) postnatal onset of brain dysfunction, and (4) undecided age at onset. This subcategorization has relevance to the type of diagnostic studies that may be indicated.

Using this approach, a retrospective study of the diagnostic evaluations of 98 mentally deficient children was performed. Ninety percent of these children were considered to have had "nonrational" laboratory tests, and of these, none contributed to elucidation of the basic diagnosis. The only tests that were valuable had been indicated by a specific historical or physical finding in addition to mental deficiency.

(Am J Dis Child 129:1285-1290, 1975)

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