Idiopathic disorder causing vertigo
Aetiology
- Thought to be caused by excess of endolymph within the membranous labryth
Pathophysiology
- Current theories suggest the symptoms result from an increase in endolymphatic pressure due to dysfunctioning sodium channels
Clinical presentation
- Attacks are comprised of a triad of severe paroxysmal vertigo, with sensorineural hearing loss and tinnitus on the affected side
- Vertigo is recurrent, spontaneous, rotational vertigo with at least 2 episodes >20 mins (often lasting hours)
- Change in hearing or tinnitus around the time of the dizzy spell
- Sensation of ear being full
Investigations
Audiology
- Typically low frequency sensorineural hearing loss
Management
- Supportive treatment during episodes
- Lifestyle advice - reducing salt, avoiding chocolate and caffeine, avoiding stress
- There are some medical, injected and surgical options but not much evidence to support effectiveness