This article requires a subscription to view the full text. If you have a subscription you may use the login form below to view the article. Access to this article can also be purchased.
We thank Dr. Lanska for the interest in our article1 that introduced a questionnaire comprising 6 questions to diagnose benign paroxysmal positional vertigo (BPPV) and its subtypes. Dr. Lanska instead proposed a rather simple 4-question approach. This proposition is based on the assumption that BPPV preferentially involves the posterior semicircular canal (PC-BPPV). Indeed, the posterior semicircular canal is more commonly involved (60%–90%) than other canals in BPPV.2 The proportion of BPPV involving the horizontal canal (HC-BPPV), however, should not be underestimated. According to the prior studies, HC-BPPV comprises 20%–35% of idiopathic BPPV.3,4 Given the similar proportion of HC-BPPV among the centers in South Korea3 and a lower incidence of HC-BPPV in patients with a lesser interval from symptom onset to diagnosis,5 this seemingly higher proportion of HC-BPPV in our studies may not be ascribed to a referral-bias, and the proportion of HC-BPPV seems higher than is believed in the real world.
Footnotes
Author disclosures are available upon request (journal{at}neurology.org).
- © 2020 American Academy of Neurology
AAN Members
We have changed the login procedure to improve access between AAN.com and the Neurology journals. If you are experiencing issues, please log out of AAN.com and clear history and cookies. (For instructions by browser, please click the instruction pages below). After clearing, choose preferred Journal and select login for AAN Members. You will be redirected to a login page where you can log in with your AAN ID number and password. When you are returned to the Journal, your name should appear at the top right of the page.
AAN Non-Member Subscribers
Purchase access
Letters: Rapid online correspondence
REQUIREMENTS
You must ensure that your Disclosures have been updated within the previous six months. Please go to our Submission Site to add or update your Disclosure information.
Your co-authors must send a completed Publishing Agreement Form to Neurology Staff (not necessary for the lead/corresponding author as the form below will suffice) before you upload your comment.
If you are responding to a comment that was written about an article you originally authored:
You (and co-authors) do not need to fill out forms or check disclosures as author forms are still valid
and apply to letter.
Submission specifications:
- Submissions must be < 200 words with < 5 references. Reference 1 must be the article on which you are commenting.
- Submissions should not have more than 5 authors. (Exception: original author replies can include all original authors of the article)
- Submit only on articles published within 6 months of issue date.
- Do not be redundant. Read any comments already posted on the article prior to submission.
- Submitted comments are subject to editing and editor review prior to posting.
You May Also be Interested in
Alert Me
Recommended articles
Central paroxysmal positional nystagmus
Nystagmus while recumbent in horizontal canal benign paroxysmal positional vertigo
Natural course of the remission of vertigo in patients with benign paroxysmal positional vertigo
Superior semicircular canal dehiscence presenting with recurrent positional vertigo