Cognitive Behavioral Group Therapy for Trichotillomania (Hair Pulling Disorder)

Recruiting

• Conditions: Trichotillomania

• Registration Number: NCT02747771
• Lead Sponsor: Oslo University Hospital

Brief Summary

This study aims at evaluating the effectiveness of group-based cognitive behavioral therapy for trichotillomania at three clinical sites in Norway.

Detailed Description

The Norwegian Trichotillomania Project is a multicenter study that aims at evaluating the effectiveness of behavioral group therapy for TTM, i.e., ACT (Acceptance and commitment therapy) enhanced habit reversal training (ACT-enhanced HRT).

Participants are adults or adolescents (16 year or older) who fulfill criteria for TTM according to DSM-IV. Inclusion started in January 2013 and will be completed by Mai 2016. Treatment is delivered at three treatment sites in Norway; in Kristiansand, Oslo, and Trondheim. Treatment is manualized, following the manual of Twohig and Woods, and consists of ten group sessions of three hours delivered at consecutive weeks, and two or three booster sessions during the first year after treatment.

Treatment outcome is evaluated by three outcome measures; the Massachusetts General Hospital - Hairpulling Scale (self-report); the National Institute of Mental Health Trichotillomania Severity Scale (clinical interview, conducted by independent evaluators); and the Clinical Global Impression Scale for TTM. Outcome is measured at three points in time; at baseline, at the end of treatment, and at one-year follow-up. Mixed models procedures in SPSS is used to analyze longitudinal data.

The first paper will be written on patients admitted to treatment from January 2013 to September 2014, and includes 53 patients (49 women and four men). By January 2016, fifty-one patients (96%) had participated in the one-year follow-up evaluation.

Study Timeline

• Study Start: 2013-01-01
• Study First Submitted: 2016-04-14
• Study First Submitted QC: 2016-04-21
• Study First Posted: 2016-04-22
• Status Verified: 2024-03
• Last Update Submitted: 2024-03-01
• Last Update Posted: 2024-03-05
• Primary Completion: 2024-04-01
• Study Completion: 2026-12-31

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 150

Inclusion Criteria

• Clinical diagnosis of Trichotillomania
  • Age between 16 and 67

Exclusion Criteria

• schizophrenia spectrum disorder
  • substance addiction
  • severe antisocial, schizotypal, or paranoid personality disorder
  • severe eating disorder,
  • ongoing suicidal ideation
  • pervasive developmental disorder
  • mental retardation and severe sequelae after brain injury.

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Change in Massachusetts General Hospital - Hairpulling Scale (MGH-HS)	baseline, 12 weeks, 12 months	self-report
Change in National Institute of Mental Health Trichotillomania Severity Scale (NIMH-TSS)	baseline, 12 weeks, 12 months	clinical interview

Secondary Outcome Measures

Name	Time	Method
Change General Anxiety Disorder Scale (GAD-7)	baseline, 12 weeks, 12 months	self-report anxiety symptoms
Change Metacognition Questionnaire (MCQ-30)	baseline, 12 weeks, 12 months	self-reported metacognitions
Change Patient Health Questionnaire-9 (PHQ-9)	baseline, 12 weeks, 12 months	self-report depressive symptoms
Change in Acceptance and Action Questionnaire for Trichotillomania	baseline, 12 weeks, 12 months	self-report

Trial Locations

Locations (1)

Oslo University Hospital; 🇳🇴 Oslo, Norway