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Dizziness, Vertigo Imbalance
What is a balance disorder?
A balance disorder is a disturbance that causes an individual to feel unsteady, giddy, woozy, or have a sensation of movement, spinning, or floating. An organ in our inner ear, the labyrinth, is an important part of our vestibular (balance) system. The labyrinth interacts with other systems in the body, such as the visual (eyes) and skeletal (bones and joints) systems, to maintain the body’s position. These systems, along with the brain and the nervous system, can be the source of balance problems.
Three structures of the labyrinth, the semicircular canals, let us know when we are in a rotary (circular) motion. The semicircular canals, the superior, posterior, and horizontal, are fluid-filled. Motion of the fluid tells us if we are moving. The semicircular canals and the visual and skeletal systems have specific functions that determine an individual’s orientation. The vestibule is the region of the inner ear where the semicircular canals converge, close to the cochlea (the hearing organ). The vestibular system works with the visual system to keep objects in focus when the head is moving. Joint and muscle receptors also are important in maintaining balance. The brain receives, interprets, and processes the information from these systems that control our balance.
What are the symptoms of a balance disorder?
When balance is impaired, an individual has difficulty maintaining orientation. For example, an individual may experience the room spinning and may not be able to walk without staggering, or may not even be able to arise. Some of the symptoms a person with a balance disorder may experience are:
- A sensation of dizziness or vertigo (spinning).
- Falling or a feeling of falling.
- Lightheadedness or feeling woozy.
- Visual blurring.
Some individuals may also experience nausea and vomiting, diarrhea, faintness, changes in heart rate and blood pressure, fear, anxiety, or panic. Some reactions to the symptoms are fatigue, depression, and decreased concentration. The symptoms may appear and disappear over short time periods or may last for a longer period of time.
What causes a balance disorder?
Infections (viral or bacterial), head injury, disorders of blood circulation affecting the inner ear or brain, certain medications, and aging may change our balance system and result in a balance problem. Individuals who have illnesses, brain disorders, or injuries of the visual or skeletal systems, such as eye muscle imbalance and arthritis, may also experience balance difficulties. A conflict of signals to the brain about the sensation of movement can cause motion sickness (for instance, when an individual tries to read while riding in a car). Some symptoms of motion sickness are dizziness, sweating, nausea, vomiting, and generalized discomfort. Balance disorders can be due to problems in any of four areas:
- Peripheral vestibular disorder, a disturbance in the labyrinth.
- Central vestibular disorder, a problem in the brain or its connecting nerves.
- Systemic disorder, a problem of the body other than the head and brain.
- Vascular disorder, or blood flow problems.
What are some types of balance disorders?
Some of the more common balance disorders are:
Benign Paroxysmal Positional Vertigo (BPPV) -a brief, intense sensation of vertigo that occurs because of a specific positional change of the head. An individual may experience BPPV when rolling over to the left or right upon getting out of bed in the morning, or when looking up for an object on a high shelf. The cause of BPPV is not known, although it may be caused by an inner ear infection, head injury, or aging. Click here to learn more about Benign Paroxysmal Vertigo
Labyrinthitis -an infection or inflammation of the inner ear causing dizziness and loss of balance.
M ni re’s disease -an inner ear fluid balance disorder that causes episodes of vertigo, fluctuating hearing loss, tinnitus (a ringing or roaring in the ears), and the sensation of fullness in the ear. The cause of M ni re’s disease is unknown.
Anxiety – Anxiety and panic disorders are one of the most common causes of dizziness and can mimic true vestibular problems.
How are balance disorders diagnosed?
Diagnosis of a balance disorder is complicated because there are many kinds of balance disorders and because other medical conditions–including ear infections, blood pressure changes, and some vision problems–and some medications may contribute to a balance disorder. A person experiencing dizziness should see a physician for an evaluation.
The primary physician should rule out some basic medical problems such as anxiety, migraine, diabetes and other medical problems. He may request the opinion of an otologist to help evaluate a balance problem. An otologist is a physician/surgeon who specializes in diseases and disorders of the ear with expertise in balance disorders. He or she will usually obtain a detailed medical history and perform a physical examination to start to sort out possible causes of the balance disorder. The physician may require tests to assess the cause and extent of the disruption of balance. The kinds of tests needed will vary based on the patient’s symptoms and health status. Because there are so many variables, not all patients will require every test.
Some examples of diagnostic tests the otolaryngologist may request are a hearing examination, blood tests, an electronystagmogram (ENG–a test of the vestibular system), or imaging studies of the head and brain.
The caloric test may be performed as part of the ENG. In this test, each ear is flushed with warm and then cool usually one ear at a time; the amount of nystagmus resulting is measured. Weak nystagmus or the absence of nystagmus may indicate an inner ear disorder.
Another test of the vestibular system, posturography, requires the individual to stand on a special platform capable of movement within a controlled visual environment; body sway is recorded in response to movement of the platform and/or the visual environment.
How are balance disorders treated?
There are various options for treating balance disorders. One option includes treatment for a disease or disorder that may be contributing to the balance problem, such as ear infection, stroke, or multiple sclerosis. Individual treatment will vary and will be based upon symptoms, medical history, general health, examination by a physician, and the results of medical tests.
Another treatment option includes balance retraining exercises (vestibular rehabilitation). The exercises include movements of the head and body specifically developed for the patient. This form of therapy is thought to promote compensation for the disorder. Vestibular retraining programs are administered by professionals with knowledge and understanding of the vestibular system and its relationship with other systems in the body.
For people diagnosed with M ni re’s disease, dietary changes such as reducing intake of sodium may help. For some people, reducing alcohol, caffeine, and/or avoiding nicotine may be helpful. Multiple other medical and surgical treatments exist for M ni re’s disease. A program of talk therapy and/or physical rehabilitation may be recommended for people with anxiety.
A program of talk therapy and/or physical rehabilitation may be recommended for people with anxiety.
How can I help my doctor make a diagnosis?
You can take the following steps that may be helpful to your physician in determining a diagnosis and treatment plan.
- Bring a written list of symptoms to your doctor.
- Fill in the health history form at this link prior to your appointment.
- Bring related copies of previous hearing, balance or medical tests.
- Bring a list of medications currently being used for balance disorders to your doctor.
- Be specific when you describe the nature of your symptoms to your doctor. For example, describe how, when, and where you experience dizziness.
Lastly, remember to write down any instructions or tips your doctor gives you.