Epidemiology of BPPV: a population based study

[size=150]Epidemiology of benign paroxysmal positional vertigo: a population based study[/size]

M von Brevern, A Radtke, F Lezius, M Feldmann, T Ziese, T Lempert, H Neuhauser
J Neurol Neurosurg Psychiatry 2007;78:710–715

Objectives: To examine the prevalence and incidence, clinical presentation, societal impact and comorbid conditions of benign paroxysmal positional vertigo (BPPV) in the general population. Methods: Cross-sectional, nationally representative neurotological survey of the general adult population in Germany with a two stage sampling design: screening of 4869 participants from the German National Telephone Health Interview Survey 2003 (response rate 52%) for moderate or severe dizziness or vertigo, followed by validated neurotological interviews (n = 1003; response rate 87%). Diagnostic criteria for BPPV were at least five attacks of vestibular vertigo lasting ,1 min without concomitant neurological symptoms and invariably provoked by typical changes in head position. In a concurrent validation study (n = 61) conducted in two specialised dizziness clinics, BPPV was detected by our telephone interview with a specificity of 92% and a sensitivity of 88% (positive predictive value 88%, negative predictive value 92%). Results: BPPV accounted for 8% of individuals with moderate or severe dizziness/vertigo. The lifetime prevalence of BPPV was 2.4%, the 1 year prevalence was 1.6% and the 1 year incidence was 0.6%. The median duration of an episode was 2 weeks. In 86% of affected individuals, BPPV led to medical consultation, interruption of daily activities or sick leave. In total, only 8% of affected participants received effective treatment. On multivariate analysis, age, migraine, hypertension, hyperlipidaemia and stroke were independently associated with BPPV. Conclusion: BPPV is a common vestibular disorder leading to significant morbidity, psychosocial impact and medical costs.

[size=150]Notes from the article:[/size]

We found the strongest association for BPPV with migraine. This association has been described previously. The frequency of migraine was three times higher in idiopathic BPPV than in BPPV secondary to head trauma or surgery. Another study found that the prevalence of migraine in patients with BPPV was twice as high as that in age and sex matched controls. The relationship between migraine and BPPV is poorly understood. It has been speculated that migraine could cause vasospasm of the labyrinthine arteries, leading to detachment of otoconia from the utricular macula.

http://www.mvertigo.org/articles/epidemiology.BPPV.07.pdf