[Contact dermatitis caused by PVP-iodine].

Allergic contact dermatitis to PVP iodine is rare. Such an occurrence in a 81-year-old woman is reported. Extensive blistering dermatitis developed after local application of a PVP iodine solution. As in all previously described cases of allergic contact dermatitis from PVP iodine, it was a reaction not to the PVP but the free iodine. More important than contact reactions are hyperthyroidism or thyrotoxic crises due to percutaneous or transmucous absorption of iodine or iodide in susceptible persons.