Prevalence of nail biting and its chronological relationship with tics in child and adolescent outpatients with Tourette syndrome: a single-centre, retrospective observational study

ObjectiveTo evaluate the prevalence of nail biting in child and adolescent outpatients at a single institution and the chronological relationship between nail biting and tics in patients with Tourette syndrome (TS) with or without attention-deficit hyperactivity disorder (ADHD).DesignRetrospective o...

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Bibliographic Details
Published in:BMJ open 2022-09, Vol.12 (9), p.e063874-e063874
Main Authors: Hsueh, Chang-Wei, Chen, Chia-Wen
Format: Article
Language:English
Subjects:
Age
Autism
Child & adolescent psychiatry
Children & youth
Drug abuse
Learning disabilities
Mental disorders
MENTAL HEALTH
Neuroses
Observational studies
Obsessive compulsive disorder
Paediatrics
Patients
Pediatrics
Regression analysis
Statistical analysis
Teenagers
Tourette syndrome
Variance analysis
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Summary:ObjectiveTo evaluate the prevalence of nail biting in child and adolescent outpatients at a single institution and the chronological relationship between nail biting and tics in patients with Tourette syndrome (TS) with or without attention-deficit hyperactivity disorder (ADHD).DesignRetrospective observational study.SettingTeaching hospital in Taiwan.ParticipantsAll participants were aged 4–18 years, including 535 patients with TS, 230 patients with provisional tic disorder and 1460 patients without neurological or psychiatric disorders (controls).Outcome measuresPresence of nail biting, starting age for nail biting and starting age for motor and/or vocal tics.ResultsNail biting was more commonly observed in patients with TS (56.6%) than in patients with provisional tic disorder (27.4%) or controls (15.0%), regardless of sex (all p
ISSN:2044-6055
2044-6055
DOI:10.1136/bmjopen-2022-063874