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Secondary Endolymphatic Hydrops (SEH)

Endolymphatic hydrops is a disorder of the inner ear and can affect the endolymphatic fluid of the cochlea, the vestibular apparatus, or both. Although its underlying cause and natural history are unknown, it is believed to result from abnormalities in the quantity, composition, and/or pressure of the endolymph (the fluid within the endolymphatic sac, a compartment of the inner ear).

In a normal inner ear, the endolymph is main­tained at a constant volume and with specific concentrations of sodium, potassium, chloride, and other electrolytes. This fluid bathes the sensory cells of the inner ear and allows them to function normally. In an inner ear affected by hydrops, these fluid-system controls are believed to be lost or damaged. This may cause the volume and concentration of the endolymph to fluctuate in response to changes in the body’s circulatory fluids and electrolytes.

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Get Involved

how YOU can help Support VeDA For over 30 years, VeDA has helped vestibular patients and the healthcare professionals who treat them. Our vision is a world where vestibular disorders are widely understood, rapidly diagnosed,

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Third Window Syndrome

Third window syndrome: What it is and how it’s treated What is Third Window Syndrome? Third window syndrome describes a group of inner ear disorders that results from a leakage of pressure and/or fluid from

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Vestibular Migraine

Approximately 40% of migraine patients have some accompanying vestibular syndrome involving disruption in their balance and/or dizziness at one time or another, which is often more persistent and debilitating than the original headache.

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Vestibular Paroxysmia

Vestibular paroxysmia is an episodic vestibular disorder which usually presents with a high frequency of attacks. This disorder was first described by Jannetta in 1975 as “disabling positional vertigo.” It is also known as microvascular

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Vestibular Triage Resources

Triage Tools for the Dizzy Patient It takes a multidisciplinary team to manage the variety of diseases causing dizziness. The role of triage tools is to educate healthcare professionals regarding the possible causes of dizziness

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