%A S Miller %A F Correia %A S Lagrata %A MS Matharu %C Italy %T OnabotulinumtoxinA for Hemicrania Continua: open label experience in 9 patients. %J J Headache Pain %D 2015 %N 1 %L discovery1467000 %O © 2015 Miller et al.; licensee Springer. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. %V 16 %X Hemicrania continua is a strictly unilateral, continuous headache, typically mild to moderate in severity, with severe exacerbations commonly accompanied by cranial autonomic features and migrainous symptoms. It is exquisitely responsive to Indomethacin. However, some patients cannot tolerate treatment, often due to gastrointestinal side effects. Therapeutic alternatives are limited and controlled evidence lacking.