Cognitive and social function in girls with congenital adrenal hyperplasia - Influence of prenatally administered dexamethasone

Objectives: To assess the cognitive, social, and emotional function in girls prenatally treated with dexamethasone (Dex) due to congenital adrenal hyperplasia (CAH), compared to CAH female patients not treated prenatally.Patients and methods: 33 girls from CAH families were studied: 17 girls treated prenatally with Dex (9 CAH-affected and 8 non-CAH-affected) and 16 CAH-affected females prenatally untre-ated. Standardized tests to assess cognitive function, tests of memory and learning process, and the Child Behavior Checklist (CBCL) were used.Results: There were few statistically significant differences between the results of treated girls (CAH-affected and unaffected) and CAH untreated patients, with a tendency for better results in all tests by Dex treated girls. Among three groups CAH-unaffected treated, CAH-affected treated, and CAH-affected untreated the best results were found in CAH-affected treated in almost all tests. The Wechsler test performance scale was significantly higher in treated CAH-affected girls. The comparison between treated and untreated CAH-affected girls revealed better results in all tasks involving the cognitive function in Dex-treated patients. Poor performance in visual perception, analysis of spatial material, and visual memory tasks were obtained in CAH-unaffected treated girls.Conclusions: Prenatal treatment with Dex creates for CAH-affected females better conditions for cognitive development. The prenatal Dex in CAH-unaffected girls can cause the risk of unfavorable influences on the development of some cognitive functions. Therefore, it is recommended that prenatal treatment in CAH-unaffected female fetuses should be stopped as soon as possible after the exclusion of the disease.