Adult Henoch-Schönlein purpura with glomerulonephritis and paroxysmal nocturnal haemoglobinuria: an uncommon association.

Henoch-Schönlein purpura (HSP) is considered to be a small blood vessel systemic vasculitis. Numerous microorganisms have been implicated in triggering HSP. We describe an unusual case of HSP with glomerulonephritis and renal failure requiring haemodialysis in a young adult man who subsequently developed paroxysmal nocturnal haemoglobinuria (PNH) with several haemolytic episodes. Bacterial infections, especially those of the respiratory and urinary tract, might trigger both the diseases.