Ménière's disease

Name	Ménière's disease
Caption	Inner ear
Diseasesdb	8003
Icd10
Icd9
Omim	156000
Medlineplus	000702
Emedicinesubj	emerg
Emedicinetopic	308
Meshid	D008575 |

Ménière's disease () is a disorder of the inner ear that can affect hearing and balance to a varying degree. It is characterized by episodes of vertigo and tinnitus and progressive hearing loss, usually in one ear. It is named after the French physician Prosper Ménière, who, in an article published in 1861, first reported that vertigo was caused by inner ear disorders. The condition affects people differently; it can range in intensity from being a mild annoyance to a chronic, lifelong disability.

Signs and symptoms

illustrating low pitch hearing loss]] The symptoms of Ménière's are variable; not all sufferers experience the same symptoms. However, so-called "classic Ménière's" is considered to have the following four symptoms:

Periodic episodes of rotary vertigo or dizziness.

Fluctuating, progressive, unilateral (in one ear) or bilateral (in both ears) hearing loss, usually in lower frequencies.

Unilateral or bilateral tinnitus.

A sensation of fullness or pressure in one or both ears.

Ménière's often begins with one symptom, and gradually progresses. However, not all symptoms must be present for a doctor to make a diagnosis of the disease. Several symptoms at once is more conclusive than different symptoms at separate times.

Attacks of rotational vertigo can be severe, incapacitating, and unpredictable and can last anywhere from minutes to hours, but generally no longer than 24 hours. For some sufferers however, prolonged attacks can occur, lasting from several days to several weeks, often causing the sufferer to be severely incapacitated. This combines with an increase in volume of tinnitus and temporary, albeit significant, hearing loss. Hearing may improve after an attack, but often becomes progressively worse. Nausea, vomiting, and sweating sometimes accompany vertigo, but are symptoms of vertigo, and not of Ménière's.

Some sufferers experience what are informally known as "drop attacks"—a sudden, severe attack of dizziness or vertigo that causes the sufferer, if not seated, to fall without warning. Drop attacks are likely to occur later in the disease, but can occur at any time.

Some sufferers also experience nystagmus, or uncontrollable rhythmical and jerky eye movements, usually in the horizontal plane, reflecting the essential role of non-visual balance in coordinating eye movements.

Migraine

There is an increased prevalence of migraine in patients with Ménière’s disease. As well, migraine leads to a greater susceptibility of developing Ménière’s disease. The distinction between migraine-associated vertigo and Ménière’s is that migraine-associated vertigo may last for more than 24 hours. It is thought that endolymphatic fluid bursts from its normal channels in the ear and flows into other areas, causing damage. This is called "hydrops". The membranous labyrinth, a system of membranes in the ear, contains a fluid called endolymph. The membranes can become dilated like a balloon when pressure increases and drainage is blocked. This may be related to swelling of the endolymphatic sac or other tissues in the vestibular system of the inner ear, which is responsible for the body's sense of balance. In some cases, the endolymphatic duct may be obstructed by scar tissue, or may be narrow from birth. In some cases there may be too much fluid secreted by the stria vascularis. The symptoms may occur in the presence of a middle ear infection, head trauma, or an upper respiratory tract infection, or by using aspirin, smoking cigarettes, or drinking alcohol. They may be further exacerbated by excessive consumption of salt in some patients.

It has also been proposed that Ménière's symptoms in many patients are caused by the deleterious effects of a herpes virus. Herpesviridae are present in a majority of the population in a dormant state. It is suggested that the virus is reactivated when the immune system is depressed due to a stressor such as trauma, infection or surgery (under general anesthesia). Symptoms then develop as the virus degrades the structure of the inner ear.

Ménière's symptoms can begin at any age, but typically begin between the ages of 30 and 60, and affects men slightly more than women. Hearing loss can affect both ears either simultaneously or with a variable interval between the first and the second ear.

Other possible conditions that may lead to Ménière's symptoms include syphilis, Cogan's syndrome, autoimmune disease of the inner ear, dysautonomia, perilymph fistula, multiple sclerosis, acoustic neuroma, and both hypo- and hyperthyroidism.

Diagnosis

Doctors establish a diagnosis with complaints and medical history. However, a detailed otolaryngological examination, audiometry and head MRI scan should be performed to exclude a vestibular schwannoma or superior canal dehiscence which would cause similar symptoms. There is no definitive test for Ménière's, it is only diagnosed when all other causes have been ruled out. If any cause had been discovered, this would eliminate Ménière's disease, as by its very definition, as an exclusively idiopathic disease, it has no known causes.

History

Ménière's disease had been recognized as early as 1860s, but it was still relatively vague and broad at the time. The American Academy of Otolaryngology-Head and Neck Surgery Committee on Hearing and Equilibrium (AAO HNS CHE) set criteria for diagnosing Ménière's, as well as defining two sub categories of Ménière's: cochlear (without vertigo) and vestibular (without deafness).

In 1972, the academy defined criteria for diagnosing Ménière's disease as: #Fluctuating, progressive, sensorineural deafness. #Episodic, characteristic definitive spells of vertigo lasting 20 minutes to 24 hours with no unconsciousness, vestibular nystagmus always present. #Usually tinnitus. #Attacks are characterized by periods of remission and exacerbation.

In 1985, this list changed to alter wording, such as changing "deafness" to "hearing loss associated with tinnitus, characteristically of low frequencies" and requiring more than one attack of vertigo to diagnose. Finally in 1995, the list was again altered to allow for degrees of the disease: # Certain - Definite disease with histopathological confirmation # Definite - Requires two or more definitive episodes of vertigo with hearing loss plus tinnitus and/or aural fullness # Probable - Only one definitive episode of vertigo and the other symptoms and signs # Possible - Definitive vertigo with no associated hearing loss

Prevention

Several environmental and dietary changes are thought to reduce the frequency or severity of symptom outbreaks. Most patients are advised to adopt a low-sodium diet, typically one to two grams per day.

Treatments aimed at lowering the pressure within the inner ear include antihistamines, anticholinergics, steroids, and diuretics.

The antiherpes virus drug acyclovir has also been used with some success to treat Ménière's Disease.

Treatment

Because Ménière's cannot be cured, treatments focus more on addressing symptoms. In extreme cases, it is necessary to destroy vestibular hair cells with the antibiotic streptomycin or to remove the affected labyrinth surgically in order to relieve severe vertigo. Patients are sometimes treated by the insertion of a shunt that diverts excess endolymph directly to the cerebrospinal fluid, a procedure that is not always effective. Typical remedies to improve symptoms may include:

Antihistamines considered antiemetics such as meclozine and dimenhydrinate

Antiemetic drugs such as trimethobenzamide.

Antivertigo/antianxiety drugs such as betahistine and diazepam.

Herbal remedies such as ginger root.

Coping

Sufferers tend to have high stress and anxiety due to the unpredictable nature of the disease. Healthy ways to combat this stress can include aromatherapy, yoga, T'ai chi., and meditation.

Surgery

If symptoms do not improve with typical treatment, more permanent surgery is considered. Unfortunately, because the inner ear deals with both balance and hearing, few surgeries guarantee no hearing loss.

Nondestructive

Nondestructive surgeries include those which do not actively remove any functionality, but rather aim to improve the way the ear works.

Intratympanic steroid treatments involve injecting steroids (commonly dexamethasone) into the middle ear in order to reduce inflammation and alter inner ear circulation.

Surgery to decompress the endolymphatic sac has shown to be effective for temporary relief from symptoms. Most patients see a decrease in vertigo occurrence, while their hearing may be unaffected. This treatment, however, does not address the long-term course of vertigo in Ménière's disease. Danish studies even link this surgery to a very strong placebo effect, and that very little difference occurred in a 9-year followup, but could not deny the efficacy of the treatment.

Destructive

Destructive surgeries are irreversible, and involve removing entire functionality of most, if not all, of the affected ear.

The inner ear itself can be surgically removed via labyrinthectomy. Hearing is always completely lost in the affected ear with this operation.

Alternatively, surgeons can cut the nerve to the balance portion of the inner ear in a vestibular neurectomy. Hearing is often mostly preserved, however the surgery involves cutting open into the lining of the brain, and a hospital stay of a few days for monitoring would be required.

Vertigo (and the associated nausea and vomiting) typically accompany the recovery from destructive surgeries as the brain learns to compensate.

The central nervous system (CNS) can be re-trained because of its plasticity, or alterability, as well as its repetitious pathways. During vestibular rehabilitation, physiotherapists take advantage of this characteristic of the CNS by provoking symptoms of dizziness or unsteadiness with head movements while allowing the visual, somatosensory and vestibular systems to interpret the information. This leads to a continuous decrease in symptoms.

Some Ménière's disease sufferers, in severe cases, may end up losing their jobs, and will be on disability until the disease burns out. However, a majority (60-80%) of sufferers will not need permanent disability and will recover with or without medical help. Tinnitus can be unpredictable, but patients usually get used to it over time. However, Ménière's is known to "burn out" when vestibular function has been destroyed to a stage where vertigo attacks cease.

Studies done on both right and left ear sufferers show that patients with their right ear affected tend to do significantly worse in cognitive performance. General intelligence was not hindered, and it was concluded that declining performance was related to how long the patient had been suffering from the disease.

Notable cases

In history

Alan B. Shepard, the first American astronaut, was diagnosed with Ménière’s disease in 1964, grounding him after only one brief spaceflight. Several years later, an endolymphatic shunt surgery (which was then at the experimental stage) was performed, allowing Shepard to fly to the Moon on Apollo 14. Jonathan Swift, Anglo-Irish satirist, poet, and cleric, is known to have suffered from Ménière’s disease. Varlam Shalamov, a Russian writer, was affected. Su Yu, PLA General who achieved many victories for the communists during the Chinese Civil War was hospitalized in 1949 and that prevented him from taking command in the Korean War, and Mao selected Peng Dehuai instead.

Possible cases

Marilyn Monroe, American actress and cultural icon was known to experience the vertigo and compromised hearing associated with Ménière’s. Charles Darwin may have suffered from Ménière’s disease. This idea is based on a common list of symptoms which were present in Darwin's case, such as tinnitus, vertigo, dizziness, motion sickness, vomiting, continual malaise and tiredness. The absence of hearing loss and 'fullness' of the ear (as far as known) excludes, however, a diagnosis of typical Ménière’s disease. Darwin himself had the opinion that most of his health problems had an origin in his 4-year bout with sea sickness. Later, he could not stand traveling by carriage, and only horse riding would not affect his health. One of the diagnoses that he received from his physicians at the time was that of "suppressed gout". The source of Darwin's illness is not known for certain. See Charles Darwin's health. Martin Luther wrote in letters about the distresses of vertigo, and suspected Satan was the cause. Julius Caesar was known to have suffered from the "falling sickness" as noted in Plutarch's Parallel Lives, and has been cited by Shakespeare, noting that Caesar was unable to hear fully in his left ear. It has been suggested that Vincent Van Gogh, the Dutch Post-Impressionist, may have suffered from Ménière's, though this is now considered conjectural. See Vincent van Gogh's medical condition for a discussion of the range of possible alternative diagnoses.

Modern

Author and entrepreneur Guy Kawasaki Contemporary artist and graphic designer Doc Hammer, of The Venture Bros. fame, has Ménière's syndrome according to his May 16, 2005 journal entry. Paddy McAloon, the singer and songwriter for the British pop group Prefab Sprout, was diagnosed with Ménière's in 2004. Basketball player Steve Francis suffers from Ménière's. Singer Ryan Adams of The Cardinals made it known he suffered from Ménière's disease when he announced his departure from the band. Dawn Miceli, podcaster, discovered she may have Ménière’s disease while reading an article in Redbook. Shawnae Jebbia, Miss USA 1998, was diagnosed with Ménière's disease while fulfilling her duties as Miss USA for the following year. Previously, she had a successful run as a fitness model/instructor on ESPN2, but this forced Jebbia into retiring from the entertainment business. Singer and actress Kristin Chenoweth has performed on stage while suffering from severe symptoms of Ménière's disease. Actress Katie Leclerc portrays a young deaf girl on the ABC Family series Switched at Birth. While not deaf herself, she does suffer from Ménière's disease.

Author Evelyn Dove Coleman was diagnosed with Ménière’s disease in November 1997 and soon after took disability status.

Professional hockey player Mattias Ritola was diagnosed with the disease in 2010 while playing with the Tampa Bay Lightning. Calvin Chen of boy band Fahrenheit was diagnosed on December 14, 2009 after being rushed to the hospital. Aaron Yan, another Fahrenheit member, was diagnosed 8 days after his bandmate Calvin Chen. Coincidentally, this disease was the same illness that his character in Mysterious Incredible Terminator (霹雳MIT) had, a role he took on the year before.

Doc Hammer, creator of the Adult Swim comedy The Venture Brothers suffers from the disease.

Notes

References

External links

Category:Diseases of inner ear Category:Neurology