Relapsing Henoch-Schönlein purpura associated with Pseudomonas aeruginosa pyelonephritis.

Henoch-Schönlein purpura is a systemic vasculitis of unknown cause. It is frequently triggered by a streptococcal upper respiratory tract infection. Other bacteria have been implicated as triggering agents. We report a recurring case of Henoch-Schönlein purpura in a patient with Pseudomonas pyelonephritis. The Henoch-Schönlein purpura remitted only when the infection was eradicated. Pseudomonas infection should be added to the list of bacteria that can trigger Henoch-Schönlein purpura.