Ancona A, Suárez de la Torre R, Macotela E
Contact Dermatitis. 1985 Aug;13(2):66-8. doi: 10.1111/j.1600-0536.1985.tb02506.x.
A patient developed an erythematous papular, vesicular rash after application of povidone-iodine 10% solution used as a surgical antiseptic. Patch testing revealed positive responses to povidone iodine 10 and 5% in water; 25 controls were negative. Patch testing with iodine, 0.5% in ethanol gave negative results.