Dermatologic Signs of Biotin Deficiency Leading to the Diagnosis of Multiple Carboxylase Deficiency

Authors: Katia Seymons; Anja De Moor1; Hendrik De Raeve2; Julien Lambert1

Source: Pediatric Dermatology, Volume 21, Number 3, May 2004 , pp. 231-235(5)

Publisher: Blackwell Publishing

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Abstract:

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The biotin-responsive, multiple carboxylase deficiencies are autosomal recessively inherited disorders of metabolism in which biotin-dependent carboxylases show diminished activity. This results in an accumulation of organic acids in the urine. The clinical picture involves the nervous system, skin, respiratory system, digestive system, and immune system. The disorder has a good prognosis if biotin therapy is introduced early. If not, it can result in irreversible damage to the central nervous system and early death from metabolic acidosis. We report a 4-year-old girl with unexplained seizures that did not respond well to anticonvulsants. The development of skin problems, which histologically could match the diagnosis of a nutritional dermatitis, together with the fact that the child was constantly eating without gaining weight, led us to the diagnosis of a metabolic disorder. The accumulation of organic acids in the urine suggested the possibility of a biotin deficiency. With biotin therapy the skin problems resolved completely. The seizures also diminished. This case shows that in young children with unexplained seizures that do not respond well to classic anticonvulsant therapy, the possibility of biotin deficiency should always be considered. This article also includes a thorough review of the skin manifestations and other problems caused by biotin deficiency.

Document Type: Research article

DOI: 10.1111/j.0736-8046.2004.21308.x

Affiliations: 1: Dermatology and 2: Anatomopathology, University Hospital Antwerp, Antwerp, Belgium

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