Free full text journal article on BPPV with commentary
1. Epidemiology of benign paroxysmal positional vertigo. A population-based study. von Brevern et al (2006).
Reported a 2.4% lifetime prevalence of BPPV, 2 week median duration per occurence, and only 8% of patients receiving effective treatment. One potential limitation of this report is that patients were identified via a telephone survey
http://jnnp.bmj.com/cgi/rapidpdf/jnnp.2006.100420v1
2. Clinical characteristics of benign paroxysmal positional vertigo in Korea: a multicenter study. Moon et al (2006)
Interesting report on the prevalence of horizontal canal BPPV which appears to high (around 35%) in Dizziness Centers with quick patient access. In my practice I see the same pattern. Horizontal canal BPPV seems to be fairly common in patients with "fresh" BPPV (patients presenting to the ER with new onset positional vertigo), less common in patients with chronic BPPV. Based on the anatomical relationship between the horizontal canal and the utricle, it is not difficult to appreciate that debris could become entraped within the horizontal canal with ear dependency. The horizontal canal variant is less commonly seen in patients with chronic BPPV as patient may incidentally liberate the debris from the canal during normal daily activities
http://jkms.org/2006/pdf/06539.pdf
3. Benign paroxysmal positional vertigo predominantly affects the right labyrinth. von Brevern (2005)
Further evidence that BPPV is more common with habitual ear dependency. From my experience BPPV can be seen more frequently in patients following prolonged bedrest, operations / procedures involving prolonged ear dependency. I commonly advise individuals with recurrent unilateral BPPV to avoid dependency of the affected ear to prevent recurrences.
http://jnnp.bmj.com/cgi/content/full/75/10/1487
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