X-linked agammaglobulinaemia (XLA) presenting with neutropenia and Pseudomonas aeruginosa cellulitis

A 13-month-old fully vaccinated boy presented with a 2-day history of dactylitis, paronychia and fever. He was noted to be neutropaenic with neutrophil count of <0.1×109/L. Incision and drainage of the abscess was performed and culture of drained pus was unexpectedly positive for P seudomonas aeruginosa. He …