This article includes supplementary video clips, available online at

mds21955.mpg13761KThe video shows the simple phonic tic of the patient. The neurological examination, with the exception of the tic was normal. During the video we asked to suppress the tic, and after this the patient had an urge.Audio is not included on earlyview. Audio is available on full version of video clip on DVD supplement.

Please note: Wiley Blackwell is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.