Health Atlas
Menu
Evidence-led reference

Mental wellbeing

Body-focused repetitive behaviors: hair pulling, skin picking, habit reversal and conflicting treatment trials

9 sources · Latest source check 2026-10-20 UTC
On this page

Body-focused repetitive behaviors include repeated actions directed at one’s hair or skin. This page focuses on hair-pulling and skin-picking disorders. Occasional grooming differs from behavior that becomes difficult to control, causes injury or hair loss, and interferes with daily life. Assessment considers both physical consequences and distress.[1]

Hair pulling and skin picking are different conditions

Trichotillomania involves recurrent pulling of one’s own hair, such as scalp hair, eyebrows or eyelashes. Skin-picking disorder, also called excoriation disorder or dermatillomania, involves repeated picking that can damage skin. A person can have either or both. Hair loss or a skin lesion also has other potential causes, so identifying the visible problem does not by itself establish a psychiatric diagnosis. These disorders warrant support rather than being dismissed as a cosmetic concern.[2]

Automatic and focused behaviors can coexist

Automatic pulling occurs with limited awareness, for example while occupied with another activity. Focused pulling responds to an identified urge, sensation or emotional trigger. The 2010 pediatric behavior study describes both patterns within the same person, rather than two fixed types of people. Younger children may have more difficulty describing urges. Asking when and how the behavior happens can therefore guide awareness training and environmental changes more usefully than assuming that everyone consciously chooses each action.[3]

Assessment includes triggers and tissue damage

The NHS advises assessment when picking cannot be controlled, damages skin or causes emotional distress or daily-life difficulty. A clinician examines the skin and may consider acne, eczema or other physical triggers alongside the behavior. Severe or nonhealing wounds need appropriate medical attention. Identifying a treatable skin condition and helping with repetitive behavior are complementary goals; one should not assume that every lesion is explained by anxiety.[1]

Habit reversal teaches skills rather than relying on willpower

The NHS describes habit reversal as part of cognitive behavioral treatment. It helps people recognize pulling or picking patterns and develop an alternative action, with attention to relevant triggers. Treatment can adapt to the person’s routine and age. Supportive monitoring should help recognition rather than punish symptoms. A clinician can also assess related emotional difficulties. The goal is reduced injury and improved functioning, not simply hiding visible hair loss.[2]

The small child-therapy study supports cautious adaptation

Franklin and colleagues examined a 24-person randomized trial of behavior therapy versus minimal-attention control in children aged 7–17. Their age analysis did not identify a significant difference in improvement by age, but included very few younger children. The report describes its findings as preliminary and hypothesis-generating. It suggests that younger children can engage with adapted behavioral treatment; it does not establish identical effectiveness at every age or equivalence to all other active therapies.[3]

The pediatric NAC result differed

A 2013 add-on trial randomized 39 children and adolescents aged 8–17 to NAC or placebo for 12 weeks. It found no significant difference on its primary or secondary outcomes; some measures improved over time in both groups. This directly challenges the assumption that the favorable adult result transfers to children. Small samples leave precision limits, but combining adult and pediatric findings into one uncomplicated endorsement would conceal a clinically important difference.[5]

A personalised plan maps more than the visible action

Comprehensive behavioral treatment, or ComB, starts with a collaborative assessment of what triggers and maintains pulling or picking. It considers sensations, thoughts, emotions, practiced movements and surroundings. For example, wanting a surface to feel smooth differs from a hand habit during another activity. The therapist and person choose relevant targets and review whether the selected strategies help. This describes a framework, rather than a fixed exercise list for every person.[7]

Evidence & uncertainty

Behavioral treatment and selected medicine trials offer useful evidence, but findings differ by age and condition. A promising short trial does not establish a universal first choice, permanent recovery or safety of unsupervised supplement use.[6]

Selected-source overview · Independent review pending

Published questions

Does occasional skin picking mean a disorder?

Selected-source overview · Independent review pending. Read the evidence context.

No. Control, damage, distress and daily functioning influence assessment.[1]

Evidence behind this answer
  • Skin picking disorder

    agency condition explanation · Date not stated
    Relevant original source passages retrieved and inspected · Symptoms, damage, triggers, assessment and treatment

This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.

Is skin picking another name for hair pulling?

Selected-source overview · Independent review pending. Read the evidence context.

No. They involve different actions and consequences, although they can coexist.[2]

Evidence behind this answer

This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.

Must someone notice every episode?

Selected-source overview · Independent review pending. Read the evidence context.

No. Automatic and focused behavior can occur in the same person.[3]

Evidence behind this answer

This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.

Did the adult NAC trial show benefit?

Selected-source overview · Independent review pending. Read the evidence context.

It found symptom improvement in selected adults over 12 weeks.[4]

Evidence behind this answer

This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.

Can the adult NAC result be assumed for children?

Selected-source overview · Independent review pending. Read the evidence context.

No. The pediatric placebo-controlled trial did not find significant benefit.[5]

Evidence behind this answer

This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.

Did memantine prove better than behavioral therapy?

Selected-source overview · Independent review pending. Read the evidence context.

No. Its trial compared memantine with placebo, not an active behavioral program.[6]

Evidence behind this answer

This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.

Why might two people with hair pulling be offered different therapy exercises?

Selected-source overview · Independent review pending. Read the evidence context.

A ComB assessment maps each person’s sensory, thought, emotional, movement and environmental triggers. The plan targets the relevant pattern and is reviewed together, rather than assigning the same exercise to everyone.[7]

Evidence behind this answer
  • Comprehensive Behavioral (ComB) Treatment for Skin Picking and Hair Pulling Disorders

    developer authored professional explanation · Date not stated
    Original expert explanation relevant complete ComB definition, collaborative assessment and five-domain sections read. No date displayed; broad historical medication claims and treatment-of-choice rankings are not adopted. Developers also coauthored the separate trial. · ComB treatment; four phases; functional analysis and five sensory/thought/emotion/motor/place domains

This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.

What does acceptance mean in therapy for hair pulling?

Selected-source overview · Independent review pending. Read the evidence context.

Acceptance means practising experiencing urges and feelings without automatically responding by pulling. The studied approach combined this with habit-reversal and environmental skills. The trial compared whole packages, so it cannot establish what acceptance adds by itself.[9]

Evidence behind this answer
  • Acceptance-Enhanced Behavior Therapy for Trichotillomania in Adults: A Randomized Clinical Trial

    randomized active comparator trial · 2022
    Original public full text retrieved; complete abstract, intervention rationale, selected outcome/limitations and NIMH funding passages read. Native PubMed failed and native PMC challenged. Package comparison cannot identify acceptance component’s incremental benefit. · Abstract; acceptance rationale; HRT/stimulus-control versus supportive-education comparison; masked evaluators; outcomes; limitations/funding

This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.

An adult NAC trial found symptom benefit

The 2009 placebo-controlled trial studied N-acetylcysteine, or NAC, in 50 adults with trichotillomania for 12 weeks. It reported greater reduction in pulling symptoms with NAC than placebo. NAC was investigated as a glutamate-modulating intervention; the biological rationale does not itself establish which person will respond. The tested dose, clinical diagnosis and follow-up matter. Benefit in that trial cannot certify every retail formulation or justify substituting a supplement for assessment and behavioral care.[4]

The newer memantine trial remains a bounded finding

In 2023, a placebo-controlled trial enrolled 100 adults with hair-pulling or skin-picking disorder for eight weeks. Memantine improved the prespecified symptom measure and selected functional outcomes. About 60.5% receiving memantine were rated much or very much improved, compared with 8.3% receiving placebo. The sample was predominantly women. This encouraging result does not compare memantine directly with habit reversal, establish long-term durability or demonstrate benefit for every repetitive behavior. Prescribing and monitoring require individualized clinical judgment.[6]

Adult personalised treatment has a promising but limited comparison

A 2021 trial randomized 36 adults with hair-pulling disorder to immediate ComB or minimal attention followed by delayed treatment. Self-reported symptoms improved more with ComB, but interviewer-rated symptom and diagnostic differences were not significant. Complete abstinence at twelve weeks was reported in 27% versus none in the control group. The small, mostly female sample and minimal-attention comparison do not establish superiority over another active psychotherapy or the same benefit for skin picking.[8]

Skills and acceptance have also been compared with supportive therapy

Acceptance-enhanced behavior therapy combines habit-reversal and environmental skills with learning to experience urges and feelings without automatically responding by pulling. In a 2022 trial, 85 adults received this package or psychoeducation and supportive therapy over twelve weeks. Masked evaluators rated 64% versus 38% clinically improved; symptom measures also favored the skills package, while diagnostic rates did not clearly differ. Most participants were women. The study compared complete packages; it cannot show that adding acceptance alone caused the advantage.[9]

References

  1. Skin picking disorder

    Agency condition explanation

    NHS · Content/publication date: not stated
    Accessed: 2026-10-13 UTC · Relevant original source passages retrieved and inspected
    Cited sections: Symptoms, damage, triggers, assessment and treatment

    Selected-source educational reading; exact populations and access limits retained.

  2. Trichotillomania: hair-pulling disorder

    Agency condition explanation

    NHS · Content/publication date: not stated
    Accessed: 2026-10-13 UTC · Relevant original source passages retrieved and inspected
    Cited sections: Pulling sites, assessment and habit reversal

    Selected-source educational reading; exact populations and access limits retained.

  3. Behavior therapy for pediatric trichotillomania: effects of age

    Secondary trial analysis

    Franklin ME,Edson AL and Freeman JB · Content/publication date: not stated
    Accessed: 2026-10-13 UTC · Relevant original source passages retrieved and inspected
    Cited sections: 2010 secondary trial analysis: 24 children, automatic/focused patterns and exploratory age findings

    Selected-source educational reading; exact populations and access limits retained.

  4. N-acetylcysteine in trichotillomania: placebo-controlled study

    Randomized trial

    Grant JE,Odlaug BL and Kim SW · Content/publication date: not stated
    Accessed: 2026-10-13 UTC · Relevant original source passages retrieved and inspected
    Cited sections: 2009 abstract: 50 adults, 12 weeks and symptom outcomes

    Selected-source educational reading; exact populations and access limits retained.

  5. N-acetylcysteine in pediatric trichotillomania

    Randomized trial

    Bloch MH and colleagues · Content/publication date: not stated
    Accessed: 2026-10-13 UTC · Original indexed abstract inspected; direct PubMed text unavailable
    Cited sections: 2013 indexed abstract: 39 children, 12 weeks and negative comparisons

    Selected-source educational reading; exact populations and access limits retained.

  6. Memantine in trichotillomania and skin-picking disorder

    Randomized trial

    Grant JE and colleagues · Content/publication date: not stated
    Accessed: 2026-10-13 UTC · Relevant original source passages retrieved and inspected
    Cited sections: 2023 abstract: 100 adults, eight-week placebo comparison and improvement ratings

    Selected-source educational reading; exact populations and access limits retained.

  7. Comprehensive Behavioral (ComB) Treatment for Skin Picking and Hair Pulling Disorders

    Developer authored professional explanation

    Mansueto CS and Golomb RG / International OCD Foundation · Content/publication date: not stated
    Accessed: 2026-10-20 UTC · Original expert explanation relevant complete ComB definition, collaborative assessment and five-domain sections read. No date displayed; broad historical medication claims and treatment-of-choice rankings are not adopted. Developers also coauthored the separate trial.
    Cited sections: ComB treatment; four phases; functional analysis and five sensory/thought/emotion/motor/place domains

    Developer explanation supplies terms; efficacy comes from separately identified trials.

  8. Comprehensive Behavioral (ComB) Treatment of Trichotillomania: A Randomized Clinical Trial

    Randomized behavioral trial

    Carlson EJ and colleagues · Content/publication date: 2021
    Accessed: 2026-10-20 UTC · Complete original indexed abstract read. Full manuscript not independently available; comparison is minimal attention followed by delayed treatment, not another active psychotherapy. Self-report benefit did not extend to significant interviewer-rated symptom or diagnostic differences.
    Cited sections: Complete original abstract: 36 adults, immediate 12-session ComB versus minimal attention, self/interviewer outcomes and week 12 abstinence

    Small adult hair-pulling trial; not an active-therapy ranking.

  9. Acceptance-Enhanced Behavior Therapy for Trichotillomania in Adults: A Randomized Clinical Trial

    Randomized active comparator trial

    Woods DW and colleagues · Content/publication date: 2022
    Accessed: 2026-10-20 UTC · Original public full text retrieved; complete abstract, intervention rationale, selected outcome/limitations and NIMH funding passages read. Native PubMed failed and native PMC challenged. Package comparison cannot identify acceptance component’s incremental benefit.
    Cited sections: Abstract; acceptance rationale; HRT/stimulus-control versus supportive-education comparison; masked evaluators; outcomes; limitations/funding

    Single-site predominantly female sample; whole-package comparison, not an isolated acceptance test.

Scope & review

Population
Mental health and daily behavior readers; population-specific findings labeled
Exposure or intervention
Body-focused repetitive behaviors definitions,assessment and interventions
Comparison
Source-specific comparison groups and guidance populations
Outcomes
Symptoms, everyday functioning, support and safety
Timeframe
Acute presentations and continuing care; study follow-up labeled
Jurisdiction
Selected US/UK guidance; service access varies

Targeted selected-source educational explanation. Study findings, professional guidance and editorial interpretation are distinguished. No exhaustive search, independent systematic synthesis or qualified medical review.

Sources checked on their individual access dates. Selected sources were checked; ongoing surveillance and qualified review have separate statuses on the coverage page.

Revision history
  • 2026-10-13 UTC: New sourced explanation for an unlinked existing topic.
  • 2026-10-20 UTC: Added selected-source foundational, practical and evidence explanations after reading full target and neighboring guide bodies. Existing body, question and source prefixes preserved; qualified review pending.

What this article still leaves open

  • Long-term outcomes,individual differences and comparative interventions need fuller appraisal.
  • This page has not undergone qualified independent medical review.
Suggest a correction

Submit a content correction to the editorial queue, or download a local note. Leave out personal medical details. Submitted text is stored privately with a browser receipt session and is visible to this browser and the editor. Clearing cookies removes access to your submission history. This is not an account or a medical service.

Explore the topic map

Browse the health domains connected to this article. The map also identifies topics whose articles remain unwritten.