Skin eruptions following treatment with Iodine-131 for hyperthyroidism: a rare and un-reported early/intermediate side effect.

Background: Iodine-131 ((131)I) is a well-established method for the treatment of hyperthyroidism. Following such therapy, patients may experience symptoms relating to early or delayed side effects that can be prevented or minimized if necessary measures are taken. We have noticed an unusual side effect of (131)I therapy in the form of a skin eruption (iododerma) and aimed at assessing the frequency and severity of this side effect.