Meniere’s disease is a chronic condition of the inner ear causing episodes
of vertigo and sensorineural hearing loss. The nerve hearing loss
fluctuates with each dizzy spell, and there is usually tinnitus- ringing in
the ear. Most patients experience fullness or pressure in the ear.
After repeated episodes there is usually some degree of permanent hearing
loss.
This complex of inner ear symptoms can mild or in some instances severe.
Dizziness is usually the predominant symptom. Severe or frequent
dizziness can greatly interfere with normal life, putting the patient at risk
of falls, or accidents. Fortunately there is usually at least a few
minutes of warning (ear pressure, tinnitus or hearing loss) prior to the start
of the episode of vertigo. The vertigo usually lasts a few hours but may
last a day or more. There is usually nausea, often vomiting, and any
motion makes the dizziness worse.
In Meniere's disease the ear has lost its ability to regulate inner ear
fluids, however the underlying cause of this is not known. Testing to
confirm the diagnosis usually includes repeated audiograms, computerized
hearing tests (ABR, ECoG), balance function tests (ENG), and possibly other
testing.
Treatment requires salt and caffeine restriction as these substances
interfere with fluid regulation. During an episode of dizziness,
vestibular suppressants are used to sedate the part of the brain involved with
balance and reduce dizziness. Meclizine, valium, dramamine or similar
drugs can be taken by mouth. Suppositories are available if there is
vomiting. A diuretic (fluid pill) taken daily can prevent or greatly
reduce dizziness in most cases. Other medications may be prescribed by some
Otolaryngologists, however there is disagreement on the usefulness of these.
While treatment is usually very helpful with dizziness, hearing loss may show
no improvement. A hearing aid may be very helpful.
In cases which do not respond
there are alternatives. Patients with no usable hearing in the involved
ear have the option of surgical destruction of the ear (labyrinthectomy) with
excellent results. If hearing is good, this is not an option. The
balance nerve can be cut (vestibular neurectomy) sparing the hearing nerve.
Middle ear injection of Gentamycin can be done in the office. This
medication destroys the balance nerve endings in the inner ear sparing the
hearing nerve endings. Surgery to improve function of the part of the
inner ear involved in fluid regulation (the endolymphatic sac) is available.
All these treatments involve some discomfort and risk of hearing damage.
The best choice for a particular individual is often difficult. A good
rule of thumb is to be conservative in managing Meniere's disease, especially
early on, and when the possibility of future involvement of other ear is
uncertain.
A new therapy for Meniere's Disease shows a great deal of promise. It
is a nondestructive nonsurgical device called the Meniett which requires the
insertion of a myringotomy tube, and is available by prescription. For
information go to http://www.meniett.com.
For more information on Meniere's disease visit the National Institute on
Deafness and Other Communication Disorders:
NIDCD website.
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