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.
The following medical conditions are some of the possible causes of Ear canal swelling. There are likely to be other possible causes, so ask your doctor about your symptoms. Otitis externa. Folliculitis. Acute otitis media. Chronic otitis media (type of Middle ear infection) Temporal lobe abscess. Impacted wax.