Benign Paroxysmal Positional Vertigo (BPPV) - Exams and Tests
Benign paroxysmal positional vertigo (BPPV) is diagnosed with a physical exam and your
medical history. But diagnosing the cause of the
spinning, whirling sensation of
vertigo can be difficult. Several diseases, the side
effects of medicines, and head injuries can also cause vertigo.
Dix-Hallpike test may be done to help your doctor find
out the cause of your vertigo. During this test, he or she will carefully
observe any involuntary eye movements. This will help your doctor know whether
the cause of your vertigo is inside your brain, your inner ear, or the nerve
connected to your inner ear. The Dix-Hallpike test also can help your doctor
find out which ear is affected.
If your symptoms or the results of your exam make your doctor think you don't have BPPV, other tests may be done:
Electronystagmography, which attaches small wires to
your face that measure eye movements. It looks for the special eye movements
that happen when the inner ear is stimulated. The pattern of eye movements can
point to the location of the cause of the vertigo, such as the inner ear or the
central nervous system.