Various types of infections can affect the outer ear, including acute diffuse otitis extrena, the most common form of an outer ear infection, and acute localized otitis externa, which is an infection of a hair follicle, according to Medscape. Doctors often diagnose outer ear infections through an otoscopy.
Pain is a common symptom of outer ear infections, explains Medscape. Temporary hearing loss is common as well, and some people may have a feeling of fullness or pressure. Fevers can occur on occasion as can tinnitus. Exposure to water through outdoor activities, such as kayaking, surfing and swimming, often causes outer ear infections.