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Congenital Adrenal Hyperplasia

What are the symptoms?

The clinical presentation of 21 hydroxylase deficiency depends on the severity of the enzyme defect and the sex of the child. Boys with a severe defect will present at about ten days of age with vomiting, dehydration, and weight loss - the salt-losing crisis. Girls with a severe defect will have ambiguous genitalia at birth due to the effect of androgen over production in the fetus. Unless treated promptly these girls will also develop a salt-losing crisis. Boys and girls with a mild defect will present later in childhood with signs of androgen excess - tall stature, enlargement of penis or clitoris, and pubic hair - but no manifest salt loss. 

View Background Background  |  How is it treated? View How is it treated?

Medical text written August 1996 by Dr M Donaldson, Senior Lecturer in Child Health, Royal Hospital for Sick Children, Glasgow, UK and Dr R Stanhope. Material on Adults written October 2002 by Dr R Stanhope. Last updated August 2006 by Dr R Stanhope, Consultant Paediatric Endocrinologist, Great Ormond Street Hospital, London, UK.

 

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