Segment 1. Axial sensory tricks in Chorea-Acanthocytosis. The patient was asked to sit and relax while he exhibited trunk flexion and axial extension movements. When asked to fold his arms over his chest, these movements subsided although neck flexion movements were still observed. He claimed that he utilized this method when he needed to sit still. When his arms dropped to his sides, the trunk flexion and axial extension movements returned. Segment 2. The patient exhibited trunk flexion and axial extension movements together with continuous movements of his neck. When he pressed both his hands on the sides of his neck, all these movements subsided, but recurred as soon as his hands were returned to his sides.