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Ninety days after the first injection cycle he reported 85%\u201390%\u2009improvement in pain, spasms and headache frequency, with sustained 90% improvement across treatments. He experienced over 100 fewer headache hours and seven fewer headache days per month compared with baseline. Mild symptom recurrence during the final week of his 90-day interval led to adjustment to a 12-week schedule, resulting in improved consistency of relief. Botulinum toxin type A therapy provided substantial and consistent improvement in this case of post-traumatic cervical dystonia.<\/jats:p>","DOI":"10.1136\/bcr-2025-271586","type":"journal-article","created":{"date-parts":[[2026,6,29]],"date-time":"2026-06-29T13:10:36Z","timestamp":1782738636000},"page":"e271586","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Post-traumatic cervical dystonia treated with botulinum toxin type A injections to the cranial and cervical muscles"],"prefix":"10.1136","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0009-0004-0777-8031","authenticated-orcid":false,"given":"Colton","family":"Welch","sequence":"first","affiliation":[{"name":"Anesthesia and Pain Management, University of New England College of Osteopathic Medicine, Portland, ME, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Terence","family":"Gray","sequence":"additional","affiliation":[{"name":"Anesthesia and Pain Management, University of New England College of Osteopathic Medicine, Portland, ME, USA"},{"name":"Maine Comprehensive Pain Management, Portland, Maine, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2026,6,29]]},"reference":[{"key":"2026062906101706000_19.6.e271586.1","doi-asserted-by":"crossref","first-page":"41","DOI":"10.1007\/s00482-024-00790-5","article-title":"Schmerzen bei zervikaler Dystonie [pain and cervical dystonia]","volume":"38","author":"Hamami","year":"2024","journal-title":"Schmerz"},{"key":"2026062906101706000_19.6.e271586.2","doi-asserted-by":"crossref","unstructured":"Junker J , Berman BD , Hall J , et al . 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