Intake recommendations for iodine and other nutrients are provided in the Dietary Reference Intakes (DRIs) developed by the Food and Nutrition Board (FNB) at the Institute of Medicine of the National Academies (formerly National Academy of Sciences) [2].
Answer. The ear canal has very delicate skin; even a hair may cause itching in the ear. So no wonder itching or irritation is a common complaint from the hearing aid user who comes in for a follow up visit.
This leaflet lists possible causes and treatments for persistent otitis externa. Otitis externa is an inflammation of the ear canal, which may be caused by infection, allergy or other causes. Symptoms include itch, ear discharge, temporary dulled hearing and pain.titis externa is an inflammation of the ear canal, which may be caused by infection, allergy or other causes. Symptoms include itch, ear discharge, temporary dulled hearing and pain.