Saranza, G.G.SaranzaKAI-HSIANG CHENGanos, C.C.GanosKalia, L.V.L.V.KaliaChen, R.R.ChenLang, A.E.A.E.Lang2023-03-062023-03-06202103171671https://scholars.lib.ntu.edu.tw/handle/123456789/628954Prolonged remission of dystonia occurs rarely; however, well-documented cases are lacking. We report the clinical characteristics and course of four patients with botulinum toxin (BoNT)-associated prolonged remission of idiopathic cervical dystonia. Mean age at onset was 40 years. All had a relatively short duration of symptoms (mean 10.3 months), and with remission occurring after ≤ 3 treatments with BoNT. At last examination, the remission duration was 2-5 years. In the two cases that subsequently relapsed after 4-5 years, there was an altered phenomenology and worsened severity than at the onset. Recognizing this rare phenomenon has valuable clinical implications.enBotulinum toxin; Cervical dystonia; Dystonia; Relapse; Remissionjournal article10.1017/cjn.2020.280333975262-s2.0-85119010063WOS:000721315600023http://www.scopus.com/inward/record.url?eid=2-s2.0-85119010063&partnerID=MN8TOARS130243502