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.
Sudden head drops and axial extensions were recently proposed as a pathognomonic clinical sign for chorea-acanthocytosis (NAC).1 Here, we challenge this observation, describing 3 patients with Huntington disease (HD) showing this sign as a major clinical feature. Moreover, we used EMG to clarify the mechanism of these involuntary movements.
Footnotes
Supplemental data at www.neurology.org
Author contributions: Francesca Morgante: study concept and design, acquisition of data, analysis and interpretation, critical revision of the manuscript for important intellectual content, study supervision. Paolo Girlanda: acquisition of data, analysis and interpretation, critical revision of the manuscript for important intellectual content. Davide Martino: study concept and design, acquisition of data, analysis and interpretation, critical revision of the manuscript for important intellectual content.
Study funding: No targeted funding reported.
Disclosure: F. Morgante served on a scientific advisory board for Allergan, received honoraria for speaking engagements from Lundbeck, Novartis, Medtronic, Chiesi Farmaceutici, and UCB pharma, and served on the editorial advisory board of Frontiers in Movement Disorders. P. Girlanda reports no disclosures. D. Martino received honoraria for speaking engagements from Chiesi Farmaceutici, UCB pharma, and the Movement Disorders Society, and served on the editorial advisory board of Frontiers in Movement Disorders. Go to Neurology.org for full disclosures.
- Received December 8, 2012.
- Accepted in final form April 4, 2013.
- © 2013 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.
