Right hemisphere developmental learning disability: A case study

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Abstract
We report a case study of a 22-year-old man with a developmental learining disorder consisting of arithmetic diffcultles, visuo-spatial deficits and emotional difficulties. Language abillties and verbal learning were remarkably spared. The clinical picture was consistent with the diagnosis of ‘Right Hemisphere Developmental learning Disabillty’ (RHDLD) as described by Weintraub and Mesulam (Archives of neurology 1983; 40: 463-8). Computed tomography and magnetic resonance imaging scans were normal, but a positron emission tomography scan revealed a marked hypometabolism of the right hemisphere, supporting the claim that RHDLD is Indeed associated with functional abnormalities of the right hemisphere.