Author: Mohammad Salman, MD, DM, Gastroenterology

A lump behind an ear is usually an indication of a localized area of swelling of certain glands. Swelling in these lymph nodes can result in the formation of one or multiple lumps that can occur not just behind your ear but other part of your ear as well such as your earlobe or your ear canal.

Tooth sensitivity is typically caused by dentin on root areas getting exposed due to retreated gums. Sudden tooth sensitivity, also referred to as dentin hypersensitivity, may be caused by several factors and may come and go sooner or later. The most common symptom is a darting pain while consuming products that are hot, cold, sweet, or particularly acidic.