Benign positional vertigo

Benign positional vertigo is the most common type of vertigo. Vertigo is the feeling that you are spinning or that everything is spinning around you. It may occur when you move your head in a certain position.

Causes

Benign positional vertigo is also called benign paroxysmal positional vertigo (BPPV). It is caused by a problem in the inner ear.

The inner ear has fluid-filled tubes called semicircular canals. When you move, the fluid moves inside these tubes. The canals are very sensitive to any movement of the fluid. The sensation of the fluid moving in the tube tells your brain the position of your body. This helps you keep your balance.

BPPV occurs when a small piece of bone-like calcium breaks free and floats inside the tube. This sends confusing messages to your brain about your body's position.

BPPV has no major risk factors. But, your risk for developing BPPV may increase if you have:

• Family members with BPPV
• Had a prior head injury (even a slight bump to the head)
• Had an inner ear infection called labyrinthitis

  Labyrinthitis

  Labyrinthitis is irritation and swelling of the inner ear. It can cause vertigo and hearing loss.

   

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Symptoms

BPPV symptoms include any of the following:

• Feeling like you are spinning or moving
• Feeling like the world is spinning around you
• Loss of balance
• Nausea and vomiting
• Hearing loss
• Vision problems, such as a feeling that things are jumping or moving

The spinning sensation:

• Is usually triggered by moving your head
• Often starts suddenly
• Lasts a few seconds to minutes

Certain positions can trigger the spinning feeling:

• Rolling over in bed
• Tilting your head up to look at something

Exams and Tests

Your health care provider will do a physical exam and ask about your medical history.

To diagnose BPPV, your provider may perform a test called the Dix-Hallpike maneuver.

• Your provider holds your head in a certain position. Then you are asked to lie quickly backward over a table.
• As you do this, your provider will look for abnormal eye movements and ask if you feel like you are spinning.

If this test doesn't show a clear result, you may be asked to do other tests.

You may have brain and nervous system (neurological) tests to rule out other causes. These may include:

• Electroencephalogram (EEG )

  Electroencephalogram (EEG

  An electroencephalogram is a test to measure the electrical activity of the brain.

   

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• Electronystagmography (ENG)

  Electronystagmography

  Electronystagmography is a test that looks at eye movements to see how well two nerves in the brain are working. These nerves are:Vestibular nerve (...

   

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• Head CT

  Head CT

  A head computed tomography (CT) scan uses many x-rays to create pictures of the head, including the skull, brain, eye sockets, and sinuses.

   

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• Head MRI

  Head MRI

  A head MRI (magnetic resonance imaging) is an imaging test that uses powerful magnets and radio waves to create pictures of the brain and surrounding...

   

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• Hearing test
• Magnetic resonance angiography of the head

  Magnetic resonance angiography

  Magnetic resonance angiography (MRA) is an MRI exam of the blood vessels. Unlike traditional angiography that involves placing a tube (catheter) int...

   

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• Warming and cooling the inner ear with water or air to test eye movements. This is called caloric stimulation .

  Caloric stimulation

  Caloric stimulation is a test that uses differences in temperature to diagnose damage to the acoustic nerve. This is the nerve that is involved in h...

   

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Treatment

Your provider will teach you how to do a procedure called Epley's maneuver. It can move the small piece of calcium that is floating inside your inner ear. This treatment works best to cure BPPV. Other exercises, such as balance therapy, may help some people.

Some medicines can help relieve spinning sensations:

• Antihistamines
• Anticholinergics
• Sedative-hypnotics

But, these medicines often do not work well for treating vertigo.

Follow instructions on how to take care for yourself at home . To keep your symptoms from getting worse, avoid the positions that trigger it.

Outlook (Prognosis)

BPPV is uncomfortable, but it can usually be treated with Epley's maneuver. It may come back again without warning.

Possible Complications

People with severe vertigo may get dehydrated due to frequent vomiting.

When to Contact a Medical Professional

Call your provider if:

• You develop vertigo
• Treatment for vertigo doesn't work

Get medical help right away if you also have symptoms such as:

• Weakness
• Slurred speech
• Vision problems

These may be signs of a more serious condition.

Prevention

Avoid head positions that trigger positional vertigo.