The role of tsui scale in the treatment of primary cervical dystonia

Objective: To evaluate the severity of patients with primary cervical dystonia and the effectiveness of treatment with botulinum toxin A (Dysport based on the Tsui scale Methods: We conducted a cross-sectional descriptive study of all patients with primary cervical dystonia treated with botulinum toxin A injections at Tam Anh General Hospital from November 2022 to April 2024. Patients were assessed in detail on the Tsui scale before and after treatment 4-6 weeks. Patients were considered to have improvement when the Tsui score after treatment decreased by at least 30% compared to before treatment. Results: There were 17 patients (12 men and 5 women) who met the criteria in our study. The Tsui score before treatment in the male patient group, complex disease, with tremor was higher than that in the female patient group, simple disease, without tremor (p< 0.001). 100% of patients responded to treatment with an average improvement rate of 0.56. The Tsui score after 4-6 weeks of injection (4.59 ± 2.87) improved significantly compared to before treatment (9.71 ± 4.34) (p< 0.001). Conclusion: Our research has demonstrated an enhancement in Tsui score following treatment with BoNT among patients with cervical dystonia. The Tsui score is an objective measure for evaluating treatment effectiveness and should be more widely used in clinical practice.