Data collect includes 1) data about clinical movement disorder history, age, gender, height, weight, and other medical conditions; 2) clinical neurological examination; 3) tests assessing cognitive abilities (the Montreal Cognitive Assessment, Stroop, Digit Span, Hopkins Verbal Learning Test, COWA and Animals, and Brief Test of Attention); 4) tests assessing motor abilities including Toronto Western Spasmodic Rating Scale (TWSTRS) and Burke-Fahn-Marsden Dystonia Rating Scale (BFMDRS); 5) measures of anxiety and depression (Beck Depression Index, Hamilton Anxiety and Depression Rating Scales); 5) Cervical dystonia related quality of life (CDQ-24); 6) Visual Analog Scales-Quality of Life (VAS QOL) evaluating of health related quality of life.