Body-focused repetitive behaviors—nail biting, hair pulling, skin picking, and related conditions—affect millions of people. Treatment has come a long way in the last two decades, with multiple evidence-based approaches now available.
Here’s what the research supports, what’s emerging, and how to decide what might work for you.
Behavioral Therapies
Behavioral therapies are the foundation of BFRB treatment. They directly target the behavior patterns, triggers, and maintaining factors that keep BFRBs going.
Habit Reversal Training (HRT)
Evidence level: Strong. Multiple randomized controlled trials across hair pulling, skin picking, and nail biting.
HRT was developed by Nathan Azrin and R. Gregory Nunn in the 1970s. It remains the most studied and most widely recommended first-line treatment for BFRBs.
Core components:
Awareness training: The person learns to recognize triggers, early warning signs, and the chain of events leading to the behavior. This includes self-monitoring (logging episodes, noting contexts and emotions) and response detection (identifying the specific movements involved).
Competing response training: When an urge or early warning sign is detected, the person engages in a physically incompatible behavior. For nail biting, this might be clenching fists or pressing fingertips together. For hair pulling, it might be clasping hands or gripping an object. The competing response is held for 1-3 minutes or until the urge subsides.
Social support: A trusted person (partner, friend, family member) provides encouragement and gently points out the behavior when it goes unnoticed.
What the research shows:
- Response rates of 60-80% for hair pulling (trichotillomania)
- Significant reductions in skin picking severity across multiple trials
- Moderate to large effect sizes compared to control conditions
- Gains maintained at 3-6 month follow-up in most studies, though some relapse is common
Limitations:
- Requires an experienced therapist—general CBT training isn’t sufficient
- Less effective for automatic (out-of-awareness) behaviors without additional strategies
- Relapse rates increase after treatment ends, suggesting maintenance strategies are important
Comprehensive Behavioral Treatment (ComB)
Evidence level: Moderate. Controlled studies and growing clinical adoption.
ComB was developed by Charles Mansueto and colleagues as an expanded, individualized approach to BFRB treatment. It builds on HRT’s foundation but adds systematic assessment and intervention across five functional domains:
- Sensory: What sensory experience does the behavior provide? Texture of hair, satisfying “click” of a nail breaking, feeling of smooth skin after picking. Treatment identifies the sensory need and provides alternatives.
- Cognitive: What thoughts maintain the behavior? “Just one more,” “my nails are already ruined so it doesn’t matter,” “I’ll feel better after picking this.” Treatment challenges these cognitions.
- Affective: What emotional states trigger the behavior? Anxiety, boredom, sadness, frustration. Treatment builds emotion regulation skills.
- Motor: What physical habits and postures enable the behavior? Hand-to-face postures, scanning skin in mirrors. Treatment builds awareness and substitutes.
- Environmental: What settings and situations increase risk? Bathrooms, bedtime routines, driving, watching TV. Treatment modifies these environments.
Advantages over standard HRT:
- More individualized—treatment targets the specific drivers for each person
- Addresses automatic behavior more effectively through environmental and sensory interventions
- Comprehensive enough to handle multiple co-occurring BFRBs
Acceptance and Commitment Therapy (ACT)
Evidence level: Moderate and growing. RCTs for hair pulling; clinical evidence for other BFRBs.
ACT takes a fundamentally different approach from HRT. Instead of directly fighting urges and substituting competing behaviors, ACT works to change the person’s relationship with their urges.
Core principles applied to BFRBs:
- Acceptance: Learning to experience urges, discomfort, and difficult emotions without trying to eliminate them or act on them
- Defusion: Stepping back from thoughts (“I need to pull/bite/pick”) and observing them as mental events rather than commands
- Present-moment awareness: Noticing urges as they arise without immediately reacting
- Values clarification: Identifying what matters most and using those values to motivate behavior change
- Committed action: Taking specific steps aligned with values, even in the presence of urges
What the research shows:
- Comparable efficacy to HRT in head-to-head trials for trichotillomania
- Some evidence of lower relapse rates, possibly because ACT builds broader psychological flexibility
- Effective when combined with HRT components (many clinicians use both)
When ACT may be especially useful:
- When shame and self-criticism are major barriers
- When previous behavioral treatment led to relapse
- When the person has difficulty with the “fighting urges” framework of traditional HRT
- When multiple BFRBs are present (ACT’s process-level approach applies across behaviors)
Medication
Evidence level: Limited to moderate. No FDA-approved medications for any BFRB.
Medication for BFRBs is a second-line approach—typically recommended when behavioral therapy alone is insufficient, when co-occurring conditions need treatment, or when access to specialized behavioral therapy is limited.
N-Acetylcysteine (NAC)
The most studied supplement for BFRBs. NAC modulates glutamate, the brain’s primary excitatory neurotransmitter, which is implicated in compulsive behaviors.
- Hair pulling: One major RCT (Grant et al., 2009) showed 56% of participants on NAC were “much or very much improved” vs. 16% on placebo. Subsequent studies have shown mixed results.
- Skin picking: Preliminary positive data but limited controlled studies
- Nail biting: Very limited data, but mechanism of action is relevant
- Typical dose in studies: 1200-2400 mg/day
- Side effects: Generally well-tolerated. GI upset is the most common complaint.
- Availability: Over-the-counter supplement, no prescription needed
SSRIs
Selective serotonin reuptake inhibitors (fluoxetine, sertraline, escitalopram, etc.) are the most commonly prescribed medications for BFRBs, despite limited evidence for the behaviors themselves.
- For the BFRB itself: Evidence is mixed. Some studies show modest benefit; others show no advantage over placebo.
- For co-occurring conditions: More clearly helpful for the depression and anxiety disorders that frequently accompany BFRBs
- Practical role: Often prescribed because co-occurring depression or anxiety is driving the BFRB severity
Other Medications
- Clomipramine: Tricyclic antidepressant with some positive data for trichotillomania, but side effect profile limits use
- Olanzapine: Low-dose atypical antipsychotic with some evidence for hair pulling. Metabolic side effects are a concern.
- Naltrexone: Opioid antagonist with small positive studies, possibly helpful when pleasure/reward drives the behavior
- Lamotrigine: Mood stabilizer with case-report-level evidence for skin picking
- Inositol: Mixed evidence, generally well-tolerated
Medication Bottom Line
Medication alone is rarely sufficient for BFRBs. The strongest approach is behavioral therapy with medication added when:
- Behavioral therapy alone isn’t producing adequate results
- Co-occurring depression or anxiety is significant
- Access to a specialized behavioral therapist is limited and medication can serve as a bridge
Digital Tools
Evidence level: Emerging. Growing research base, particularly for awareness-based interventions.
Technology is opening new treatment pathways for BFRBs, primarily by addressing one of the biggest challenges in treatment: what happens between therapy sessions.
Awareness and Detection Tools
The largest gap in traditional BFRB treatment is awareness—especially for automatic, out-of-awareness behaviors. Digital tools that detect BFRB-related movements in real time can provide the kind of continuous awareness feedback that a therapist can’t.
These range from wearable devices (wristbands that detect hand-to-head movements) to software-based solutions. For nail biting specifically, apps like Nailed use on-device machine learning to detect the behavior and provide real-time alerts—bringing the awareness-training component of HRT into everyday life.
Habit Tracking Apps
Apps that log BFRB episodes help identify patterns: time of day, location, emotional state, and other contextual factors. This data supports the functional assessment that drives ComB and HRT. Several general habit-tracking apps can be adapted for BFRBs.
Telehealth
While not a “digital tool” in the app sense, telehealth has significantly expanded access to specialized BFRB treatment. The TLC Foundation’s push for telehealth-delivered HRT and ComB means people in areas without local BFRB specialists can access evidence-based treatment.
Limitations of Digital Approaches
- Technology supplements therapy but doesn’t replace it
- Sustained engagement can be difficult—many people stop using apps after initial enthusiasm
- Privacy considerations around behavior detection and health data
- Research on long-term outcomes is still limited
Support Groups
Evidence level: Moderate. Clinical evidence and patient-reported outcomes support group interventions.
Support groups address something behavioral therapy sometimes doesn’t: the shame, isolation, and “am I the only one?” experience that accompanies BFRBs.
What Support Groups Provide
- Normalization: Realizing others share the same struggle reduces shame and self-blame
- Practical strategies: Members share techniques that work in real life, not just in a therapist’s office
- Accountability: Regular check-ins create gentle motivation to maintain treatment gains
- Hope: Seeing others at different stages of recovery provides perspective
- Psychoeducation: Organized groups often include educational components about BFRBs
Available Formats
- TLC Foundation support groups: Both in-person and virtual options, facilitated by trained leaders. Some groups are BFRB-general; others focus on specific conditions.
- Peer-led groups: Less structured but widely available online. Reddit communities (r/trichotillomania, r/CompulsiveSkinPicking, r/calmhands) are active.
- Therapist-facilitated groups: Group therapy formats that combine peer support with professional guidance. More intensive than peer groups.
- Conference experiences: The TLC Foundation’s annual conference is widely regarded as transformative for BFRB awareness and connection.
Who Benefits Most
Support groups are particularly valuable for:
- People who haven’t disclosed their BFRB to anyone
- Those in early stages of treatment who need motivation
- People maintaining gains after formal treatment ends
- Anyone dealing with shame or isolation related to their BFRB
Choosing a Treatment Approach
There’s no single right answer. The best approach depends on:
Severity: Mild BFRBs may respond to self-directed strategies and digital tools. Moderate to severe cases typically benefit from formal behavioral therapy.
Awareness level: Highly automatic behaviors need stronger awareness-building components (environment modification, detection tools). More focused behaviors respond well to competing response training.
Co-occurring conditions: Significant depression or anxiety may need to be addressed alongside or before BFRB-specific treatment.
Access: Not everyone has a BFRB specialist nearby. Telehealth, self-help resources, and digital tools can fill gaps.
Personal preference: Some people resonate with HRT’s structured approach. Others prefer ACT’s acceptance-based framework. Both work.
A reasonable starting point for most people:
- Learn about your specific BFRB and treatment options (you’re doing this now)
- Start self-monitoring—track episodes, triggers, and contexts
- Seek a therapist with specific BFRB training if the behavior causes distress or impairment
- Consider digital tools and support groups as supplements
- Discuss medication with a prescriber if behavioral approaches alone aren’t sufficient
Treatment advances continue. What was poorly understood 20 years ago now has multiple evidence-based interventions, growing public awareness, and an expanding base of trained clinicians. The outlook for BFRB treatment is better than it’s ever been.