Treatment of Apogeotropic Horizontal Canal Benign Paroxysmal Positional Vertigo

1. history of vertigo associated with changes in head position

2. direction-changing horizontal nystagmus beating toward the uppermost ear (apogeotropic nystagmus) in both turning positions detected with Frenzel glasses or videoculography in the Head turning test

3. vertigo associated with the elicited nystagmus

4. symptom within 2 weeks

5. put one's signature on consent

1. patients with identifiable central nervous system disorders that could explain the positional vertigo and nystagmus

2. the patients with apogeotropic form which was transited from geotropic after previous therapeutic maneuvers

3. the patients who transited from apogeotropic from vertical canal BPPV during study

4. patients who had possible cause of secondary BPPV such as Meniere's disease, migraine or recent trauma history

5. patients whose affected ear cannot be identified

6. patients with multiple canal atypical positional nystagmus or who were treated previously with repositioning maneuvers were excluded.

7. patients with cervical or lumbar spine problem