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Psychological evaluation revealed evidence for internal conflicts (79%), emotional dysregulation (56%), and maintaining factors (70%). About one third of patients had a positive history for further medically unexplained symptoms. Compared to a large TS sample (n\u2009=\u20091032), patients with TS\u2009+\u2009FTB were more likely to be female, and presented significantly more common with \u201ccoprophenomena\u2010like\u201d symptoms, atypical influential factors, atypical descriptions of premonitory sensations, and higher rates of comorbid obsessive\u2010compulsive disorder and \u201cself\u2010injurious\u201d behavior.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Based on our data it can be assumed that FTB is a common comorbidity in TS, similar to functional overlay in other movement disorders and epilepsy. Before classifying a patient as suffering from treatment\u2010resistant TS, FTB should be ruled out.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/mdc3.13932","type":"journal-article","created":{"date-parts":[[2023,11,21]],"date-time":"2023-11-21T07:06:12Z","timestamp":1700550372000},"page":"227-237","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":34,"title":["Functional Tic\u2010Like Behaviors: A Common Comorbidity in Patients with Tourette Syndrome"],"prefix":"10.1002","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7181-7419","authenticated-orcid":false,"given":"Kirsten R.","family":"M\u00fcller\u2010Vahl","sequence":"first","affiliation":[{"name":"Clinic of Psychiatry, Social Psychiatry and Psychotherapy Hannover Medical School  Hannover Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anna","family":"Pisarenko","sequence":"additional","affiliation":[{"name":"Clinic of Psychiatry, Social Psychiatry and Psychotherapy Hannover Medical School  Hannover Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9585-7415","authenticated-orcid":false,"given":"Carolin","family":"Fremer","sequence":"additional","affiliation":[{"name":"Clinic of Psychiatry, Social Psychiatry and Psychotherapy Hannover Medical School  Hannover Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3898-5784","authenticated-orcid":false,"given":"Martina","family":"Haas","sequence":"additional","affiliation":[{"name":"Clinic of Psychiatry, Social Psychiatry and Psychotherapy Hannover Medical School  Hannover Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8546-5330","authenticated-orcid":false,"given":"Ewgeni","family":"Jakubovski","sequence":"additional","affiliation":[{"name":"Clinic of Psychiatry, Social Psychiatry and Psychotherapy Hannover Medical School  Hannover Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6160-9221","authenticated-orcid":false,"given":"Natalia","family":"Szejko","sequence":"additional","affiliation":[{"name":"Clinic of Psychiatry, Social Psychiatry and Psychotherapy Hannover Medical School  Hannover Germany"},{"name":"Department of Clinical Neurosciences University of Calgary  Calgary Alberta Canada"},{"name":"Department of Bioethics Medical University of Warsaw  Warsaw Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2023,12,12]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1136\/practneurol-2017-001755"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1093\/med\/9780199796267.003.0005"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1111\/jpc.14165"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1212\/WNL.0000000000001063"},{"key":"e_1_2_8_6_1","unstructured":"World Health Organisation.ICD\u201011 Reference Guide (Draft). 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