Anatomy, Head and Neck, Ear Endolymph

Endolymph is a physiological fluid that fills the inner ear's labyrinth and serves crucial sensory functions. Vibrational waves transmitted following the displacement of this fluid from outside stimuli convey information about sound, position, and balance to central sensory neural structures. The endolymph is biochemically specialized and distinct from other central nervous system fluids, such as perilymph and cerebral spinal fluid. Given its crucial role in the sensation and transmission of balance, hearing, and position information, disorders of endolymph have profoundly disabling symptoms, typically hearing loss and vertigo attacks, which can be difficult to diagnose and treat effectively.