New dimensions of benign paroxysmal positional vertigo

Area of Science:

• Neurology
• Otolaryngology
• Vestibular System Disorders

Background:

• Benign paroxysmal positional vertigo (BPPV) is a common vestibular disorder.
• The classic symptom is nystagmus in a specific head position.
• Concurrent symptoms are frequently observed but not always recognized.

Purpose of the Study:

• To investigate the incidence of concurrent symptoms in patients with classic BPPV.
• To explore a potential common pathophysiologic mechanism for both classic and concurrent symptoms.
• To evaluate the efficacy of neurectomy in resolving these symptoms.

Main Methods:

• Observation of 29 patients with classic BPPV.
• Documentation of concurrent symptoms provoked by various movements and accelerations.
• Surgical intervention (neurectomy) in nine patients to assess symptom resolution.

Main Results:

• A high incidence of concurrent symptoms was observed in patients with classic BPPV.
• Reported concurrent symptoms included vertigo upon arising, bending, head rotation, linear acceleration, and vertical oscillation.
• Neurectomy successfully eliminated both classic nystagmus and concurrent symptoms in all nine treated patients.

Conclusions:

• Concurrent symptoms should be considered an integral part of the BPPV syndrome.
• Cuplolithiasis in the posterior semicircular canal is a probable common pathophysiologic mechanism.
• Neurectomy offers a potential treatment for refractory BPPV with concurrent symptoms.