A child with X-linked agammaglobulinemia and Kawasaki disease: an unusual association.

An association of X-linked agammaglobulinemia (XLA) with Kawasaki disease (KD) is very uncommon. Only two case reports are available so far in pediatric literature. Patients with XLA have recurrent infections and physical examination have absent lymph nodes and tonsils. Laboratory investigations reveal hypogammaglobulinemia and reduced or absent B cells on flow cytometry. KD is a medium vessel vasculitis. Here, we report a 12 year old boy with X-linked agammaglobulinemia on regular replacement intravenous immunoglobulin who developed KD on follow-up. This is an uncommon occurrence.