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The concealment of the recent event posed serious difficulties in reaching the diagnosis. When the diagnosis of haloperidol-induced acute dystonia was made, 3\u2009mg of intravenous biperiden was promptly administered with complete clinical resolution in 15\u2009min.<\/jats:p>","DOI":"10.1136\/bcr-2019-231398","type":"journal-article","created":{"date-parts":[[2019,12,11]],"date-time":"2019-12-11T05:04:15Z","timestamp":1576040655000},"page":"e231398","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":1,"title":["Involuntary movements in an adolescent: what are the causes?"],"prefix":"10.1136","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4413-6212","authenticated-orcid":false,"given":"Ana Sofia","family":"Vaz","sequence":"first","affiliation":[{"name":"Pediatric Department, Centro Hospitalar e Universit\u00e1rio de Coimbra EPE, Coimbra, Portugal"},{"name":"Pediatric Department, Hospital Distrital da Figueira da Foz, Figueira da Foz, Coimbra, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"N\u00e1dia","family":"Brito","sequence":"additional","affiliation":[{"name":"Pediatric Department, Hospital Distrital da Figueira da Foz, Figueira da Foz, Coimbra, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lurdes","family":"Moura","sequence":"additional","affiliation":[{"name":"Pediatric Department, Hospital Distrital da Figueira da Foz, Figueira da Foz, Coimbra, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Agostinho","family":"Fernandes","sequence":"additional","affiliation":[{"name":"Pediatric Department, Hospital Distrital da Figueira da Foz, Figueira da Foz, Coimbra, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2019,12,10]]},"reference":[{"key":"2025082712463057000_12.12.e231398.1","doi-asserted-by":"crossref","first-page":"S13","DOI":"10.1016\/S1353-8020(13)70006-3","article-title":"Movement disorders in childhood","volume":"20","author":"Cardoso","year":"2014","journal-title":"Parkinsonism Relat Disord"},{"key":"2025082712463057000_12.12.e231398.2","doi-asserted-by":"crossref","first-page":"391","DOI":"10.1016\/j.psc.2016.04.003","article-title":"Drug-Induced extrapyramidal syndromes: implications for contemporary practice","volume":"39","author":"Caroff","year":"2016","journal-title":"Psychiatr Clin North Am"},{"key":"2025082712463057000_12.12.e231398.3","doi-asserted-by":"crossref","DOI":"10.1186\/s13104-016-2342-6","article-title":"Metoclopramide induced acute dystonic reaction: a case report","volume":"10","author":"Tianyi","year":"2017","journal-title":"BMC Res Notes"},{"key":"2025082712463057000_12.12.e231398.4","doi-asserted-by":"crossref","unstructured":"Dhakal OP , Dhakal M , Bhandari D . 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