Red rash from iodophor allergy can be relieved by local skin cleansing and medication. 1. Local skin cleaning: iodophor allergy red rash, should be immediately rinsed with running water, and then wiped clean with gauze to ensure that the skin without iodophor residue, less severe symptoms, such as the number of red rashes is small, no other uncomfortable symptoms, red rashes will gradually disappear over time. 2. medication: patients with a large number of red rashes and accompanied by obvious itching symptoms, you can use topical tretinoin cream, mometasone furoate cream, etc., and oral antihistamines, such as loratadine tablets, etc., if the surface of the red rashes appeared to be broken, you can use topical erythromycin ointment to smear. All of the above drugs have adverse reactions and are recommended to be used under the guidance of a doctor. If the symptoms of allergy rash are serious, or the symptoms persist and do not get better, it is recommended to go to the hospital in time for treatment.