This article includes Supplementary Video, available online at

jws-mds.21314.mpg13760K Segment 1. The muscle tone of the neck and limbs was increased and associated with severe rigidity and spasticity. Intermittent dystonic postures were also observed. Segment 2. The patient was able to answer questions correctly by protruding his tongue. Note that the tongue movements are extremely slow. Segment 3. The patient was asked to raise his left arm; note that the movement is very slow. It took a few minutes to complete this movement. Segment 4. This segment shows an episode of diaphoresis with tachycardia and tachypnea. This video presentation has been abbreviated. The full version will appear on theMovementDisorders DVD Supplement, which is issued bi-annually.

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.