Inflammation of the middle ear with an accumulation of fluid behind the eardrum in the middle ear space.

Inaudible, but measurable, sounds created by the vibrations of hair cells in the cochlea, which bend with the movement of fluid. OAEs are measured with a sensitive microphone placed in the ear canal. OAEs are used by audiologists as a test of inner ear (cochlear) function.

Small crystals of calcium carbonate that adhere to the gelatinous membrane in the utricle and saccule. Sometimes called otoliths.

A doctor trained to specialize in diseases of the ear, sinuses, mouth, throat, larynx and other structures of the head and neck. Commonly called an ENT—ears, nose and throat doctor.

The medical specialty that deals with problems of the ears, nose, throat, head and neck.

A type of drop attack without vertigo in which the person regains their balance in a few minutes without other side effects. Sometimes used of drop attacks due to Meniere’s disease.