Serum total thyroxine was measured in a group of 47 boys and 6 girls who suffered from functional dyslexia. Functional dyslexia is an actual reading level of, at least, 1½ years below mental expectancy. The thyroxine content of the serum of these children was markedly elevated compared to normal readers of similar age distribution (mean thyroxine concentration; dyslexic, 11.44 ug/dl; normal control = 7.69 ug/dl). These results indicate functional dyslexia is associated with systemic change in metabolism.
References
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2.
ParkGeorge E.TarsitanoRosemaryGranulocytopoiesis Concomitant to Functional Dyslexia. Chicago Medicine, October 14, 1967.