UVA photosensitivity in photosensitive bullous disease of chronic renal failure

3 chronic renal failure patients with bullous skin disease are reported. Only 1 was on maintenance hemodialysis, but all were on frusemide. Porphyrin studies failed to show classical porphyric disease. The 3 patients tested showed low minimal etyrhema doses (MED) to ultraviolet A (UVA) but normal threshold to ultraviolet B (UVB).