Abstract
An 8-year-old boy presented with eczematous skin lesions, recurrent otitis media and unexplained pyrexias. X-linked agammaglobulinaemia was diagnosed and treatment commenced with intravenous immunoglobulin replacement therapy. X-linked agammaglobulinaemia (XLA) is a primary immunodeficiency syndrome associated with a deficiency of B lymphocytes, caused by a defect in the expression of Bruton's tyrosine kinase. It affects only boys and usually presents before the age of 2 years with recurrent bacterial sinopulmonary infections. IgG levels are usually <2 g/L (normal range 5.4-16.1) and IgM and IgA are usually undetectable. The commonest cutaneous features of XLA are pyogenic skin infections; however, eczema can occur with increased frequency. We report a child who presented with multiple discrete eczematous lesions who subsequently developed eczematous exacerbations several days after administration of intravenous immunoglobulin (IVIg) replacement therapy.
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