Excoriation disorder

Excoriation Disorder (Skin-Picking Disorder) is a DSM-5-TR diagnosis (698.4) characterized by recurrent skin picking resulting in skin lesions, with repeated attempts to stop, causing clinically significant distress or impairment. It is one of the body-focused repetitive behaviour (BFRB) disorders.

Overview

Excoriation Disorder (also called Skin-Picking Disorder, dermatillomania, neurotic excoriation) is a DSM-5-TR diagnosis (698.4) in the Obsessive-Compulsive and Related Disorders chapter. It is characterized by recurrent skin picking resulting in skin lesions, repeated attempts to decrease or stop the behaviour, clinically significant distress or impairment, and not better explained by substance effects, medical conditions, or other mental disorders.

Excoriation Disorder is one of the body-focused repetitive behaviour (BFRB) disorders, a class also including Trichotillomania (Hair-Pulling Disorder; 312.39), nail biting, lip/cheek biting, and others. BFRBs share characteristic features: repetitive self-directed behaviour; relief of tension or distress in performing the behaviour; difficulty stopping despite intent; resulting damage to body tissue; and significant distress or functional impairment.

Lifetime prevalence of Excoriation Disorder is approximately 1.4-5.4% in adult populations. The disorder is more common in women than men (approximately 3:1 in clinical samples). Onset is typically in adolescence, often coinciding with the onset of acne and adolescent skin changes; some onset in early adulthood or later life.

Common features include: picking at acne, scabs, irregular skin, real or perceived blemishes; using fingernails, tweezers, or other implements; targeting face, scalp, arms, hands, or other areas; trance-like absorption during picking; sense of relief or satisfaction during; shame and distress afterward; significant time spent picking (often hours daily); resulting visible damage; and concealment behaviors (clothing, makeup, avoiding situations of body exposure).

Excoriation Disorder is highly comorbid with anxiety disorders, depression, OCD, body dysmorphic disorder, eating disorders, ADHD, and other BFRBs. The disorder produces substantial psychological distress (shame, secrecy, social avoidance), physical consequences (scarring, infections, in severe cases significant tissue damage), and functional impairment.

Treatment is effective. Cognitive behavioural Therapy with Habit Reversal Training is the most-studied approach with strong evidence base. Pharmacotherapy (SSRIs, N-acetylcysteine) has emerging evidence. Specialized BFRB treatment is increasingly available. Most people who engage in evidence-based treatment achieve substantial improvement.

Signs and symptoms

Recurrent skin picking — Repeated skin picking — at acne, scabs, irregular skin, blemishes; using fingers, fingernails, tweezers, pins, or other implements.
Resulting skin lesions — Visible damage from picking — scabs, scars, lesions, infections; severity varies from mild to disfiguring.
Repeated attempts to decrease or stop — Multiple unsuccessful efforts to reduce or stop picking; intent to stop typically not effective without specialized treatment.
Significant time spent picking — Hours per day in some cases; can interfere with work, school, social activities, sleep.
Trance-like absorption — Reduced awareness of surroundings during picking; "zoning out"; sometimes accompanied by reduced awareness of pain.
Tension and relief cycle — Building tension or urge before picking; sense of relief, gratification, or satisfaction during; shame, distress, regret afterward.
Shame and concealment — Use of clothing, makeup, hairstyles to conceal damage; avoidance of situations of body exposure (swimming, intimacy, doctor visits).
Functional impairment — Avoidance of social situations; relationship difficulties; work or school avoidance during severe periods; substantial daily time impact.
Comorbid mental-health conditions — Depression, anxiety disorders, OCD, BDD, eating disorders, ADHD, other BFRBs all common comorbidities.
Physical consequences — Scarring, skin infections, in severe cases significant tissue damage requiring medical care; rarely sepsis or other serious complications.

Diagnostic context

The DSM-5-TR criteria for Excoriation (Skin-Picking) Disorder (698.4):

A. Recurrent skin picking resulting in skin lesions.
B. Repeated attempts to decrease or stop skin picking.
C. The skin picking causes clinically significant distress or impairment in social, occupational, or other important areas of functioning.
D. The skin picking is not attributable to the physiological effects of a substance (e.g., cocaine) or another medical condition (e.g., scabies).
E. The skin picking is not better explained by symptoms of another mental disorder (e.g., delusions or tactile hallucinations in a psychotic disorder, attempts to improve a perceived defect in body dysmorphic disorder, stereotypies in stereotypic movement disorder, intention to harm oneself in nonsuicidal self-injury).

Differential diagnosis includes:

Body Dysmorphic Disorder (300.7) — picking driven by attempts to improve perceived appearance defect.
Obsessive-Compulsive Disorder — when picking is in response to obsessions and serves compulsive function.
Non-Suicidal Self-Injury Disorder — when behaviour is intended to cause harm or for emotion regulation purposes distinct from BFRB pattern.
Stereotypic Movement Disorder — particularly in autism spectrum or intellectual disability contexts.
Psychotic disorders — when delusional beliefs (parasites, infestation) drive picking.
Substance-induced — methamphetamine, cocaine use can produce skin picking.
Medical conditions — scabies, eczema, dermatitis can produce itching and picking; differential evaluation.

Validated assessment instruments include the Skin Picking Scale (SPS), Skin Picking Symptom Assessment Scale, and Massachusetts General Hospital Hairpulling Scale modified for skin picking.

Causes and risk factors

Excoriation Disorder develops through interaction of biological, psychological, and environmental factors:

Genetic factors: moderate heritability; family aggregation with other BFRBs and OCD-spectrum conditions.

Neurobiological factors: alterations in habit-formation circuits; reduced inhibitory control; altered reward processing in BFRB performance. Functional neuroimaging shows differences in habit-related circuits.

Developmental factors: onset typically coincides with adolescence and skin changes (acne); childhood adversity over-represented; early modelling of BFRBs in family contexts.

Psychological factors: emotion regulation difficulties — picking is frequently used to regulate distress, anxiety, boredom, frustration; perfectionism; certain personality features.

Trigger factors: skin imperfections (real or perceived); stress; boredom; specific contexts (mirrors, bathrooms, low-stimulation activities); certain cognitive states.

Comorbidity: OCD, anxiety disorders (especially generalized anxiety), depression, BDD, eating disorders, ADHD, other BFRBs (especially trichotillomania) all common comorbidities.

Maintenance factors: tension-relief cycle reinforces behaviour; shame leads to concealment, which prevents help-seeking and limits accountability; trance-like absorption interferes with self-monitoring.

Typical treatments

Effective treatment for Excoriation Disorder includes:

Cognitive behavioural Therapy with Habit Reversal Training (CBT-HRT): first-line treatment; strongest evidence base. Components include:

Awareness training — increasing awareness of picking behaviour, urges, contexts.
Stimulus control — reducing access to picking opportunities (gloves, removing tools, blocking mirrors).
Competing response training — engaging incompatible behaviors when urges arise (fist-clenching, fidget tools).
Cognitive restructuring of picking-related cognitions.
Functional analysis of triggers and consequences.

Acceptance and Commitment Therapy (ACT): values clarification, defusion from urges, committed action. Effective for BFRBs.

Comprehensive behavioural (ComB) Treatment: framework developed for BFRBs by Mansueto, addressing sensory, cognitive, affective, motor, and place/setting domains.

Pharmacotherapy:

SSRIs — modest evidence; particularly useful when comorbid anxiety, depression, or OCD is present.
N-acetylcysteine (NAC) — over-the-counter supplement with growing evidence base for BFRBs at doses 1200-2400 mg/day.
Naltrexone — limited evidence.
Pharmacotherapy is generally adjunctive to behavioural treatment, not standalone.

Group therapy: BFRB-specific groups provide normalization, community, and skill practice. The TLC Foundation for Body-Focused Repetitive Behaviors (bfrb.org) provides resources.

Treatment of comorbid conditions: OCD, anxiety, depression, BDD, eating disorders, ADHD all commonly need attention.

Dermatological care: coordinate with dermatology for treatment of resulting skin damage; severe scarring may benefit from cosmetic procedures after picking is stabilized.

Self-help resources: books (Stop Picking on Me by Lazaro; The Hair Pulling Habit and You by Golomb adapted for picking; Overcoming Body-Focused Repetitive Behaviors by Mansueto), online programs, peer-support communities.

When to seek help

Professional support is indicated when:

Skin picking is causing visible damage, scarring, or recurrent infections.
You spend significant time daily picking and have been unable to stop despite trying.
Picking is causing significant distress, shame, or impairment.
You are avoiding social situations, intimate contact, or activities involving body exposure.
You experience comorbid depression, anxiety, OCD, body dysmorphia, or other mental-health concerns.
You have other body-focused repetitive behaviors (hair pulling, nail biting).
Severe picking has resulted in medical complications.

Specialized BFRB resources: The TLC Foundation for Body-Focused Repetitive Behaviors (bfrb.org) — provides clinician directory, support groups, conferences, family resources. International OCD Foundation includes BFRB resources (iocdf.org).

For mental-health crisis: 9-8-8 (Suicide Crisis Helpline), 1-833-456-4566 (Talk Suicide Canada). For youth: 1-800-668-6868 (Kids Help Phone).

Frequently asked questions

Is skin picking a real disorder?

Yes. Excoriation (Skin-Picking) Disorder is a formal DSM-5-TR diagnosis (698.4) added in the DSM-5 (2013). It has specific criteria, identifiable neurobiological correlates, and an established treatment evidence base. It is recognized as one of the body-focused repetitive behaviour disorders.

Is skin picking the same as self-harm?

No. Non-Suicidal Self-Injury involves intentional self-injury for emotion regulation purposes; the explicit intent is to cause harm. Excoriation Disorder involves repetitive behaviour with characteristic tension-relief cycle, often without explicit intent to harm. The DSM-5-TR specifically distinguishes them. They can co-occur but are different.

How is skin picking different from acne picking that lots of people do?

Many people occasionally pick at acne or skin imperfections without meeting Excoriation Disorder criteria. The diagnostic threshold requires recurrent picking, repeated attempts to stop, resulting damage, and clinically significant distress or impairment. Many adolescents experience self-limited picking around acne; persistent, severe, distressing picking warrants clinical attention.

Will I have permanent scars?

Severe long-term picking can produce permanent scarring; many people have visible damage. Treatment that successfully reduces picking allows healing. For severe scarring after stabilization, dermatological treatments (laser, microneedling, others) can improve appearance.

Can children have skin-picking disorder?

Yes. Onset is typically in adolescence but younger children can also develop the disorder. Pediatric BFRB treatment is appropriate; family involvement is often part of treatment for younger children.

How long does treatment take?

CBT-HRT typically runs 8-20 sessions. Many people experience meaningful improvement within 6-10 weeks. Some need longer-term treatment, particularly when comorbid conditions are present. Maintenance work and continued self-application of skills are important for sustained recovery.

References

American Psychiatric Association. (2022). Diagnostic and Statistical Manual of Mental Disorders (5th ed., text rev.). APA.
Grant, J. E., et al. (2012). Skin picking disorder. American Journal of Psychiatry, 169(11), 1143–1149.
Mansueto, C. S., et al. (2019). The Comprehensive behavioural (ComB) Treatment Approach for Body-Focused Repetitive Behaviors.
TLC Foundation for Body-Focused Repetitive Behaviors. (n.d.). Resources for individuals and clinicians.
Grant, J. E., & Chamberlain, S. R. (2020). Trichotillomania and skin-picking disorder. The Lancet Psychiatry, 7(7), 626–636.

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