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.
Glossopharyngeal neuralgia is an irritation of the ninth cranial nerve causing extreme pain in the back of the throat, tongue and ear. Attacks of intense, electric shock-like pain can occur without warning or can be triggered by swallowing.