Excessive accumulation of endolymphatic fluid in membranous labyrinth.

S/S:

• Recurrent severe attacks of vertigo accompanied by sense of fullness in ears
• Roaring/ ringing tinnitus
• Nausea
• Headache
• Gradual/progressive sensorineural hearing loss (often unilateral)

Attacks may be increased by inc. sodium intake, vasoconstriction, premenstrual fluid retention, stress, allergies

Implementation:

• Low sodium diet
• If severe= fluid restriction
• Labyrinthectomy- complete removal of labyrinth, destroying cochlear function relieving vertigo but causing loss of any minimal remaining hearing as well