Hair pulling and skin picking: body-focused repetitive behaviors

What they are

Body-focused repetitive behaviors (BFRBs) are self-directed, body-focused actions done repeatedly despite attempts to stop and despite damage: hair pulling (trichotillomania) producing hair loss, skin picking (excoriation disorder) producing lesions, and relatives — nail biting, lip biting, cheek biting, hair twisting, tooth grinding.

They are more common than discussed: trichotillomania affects roughly 1–2% of people over a lifetime, skin picking 2–5%, with many more subclinical. Onset is typically around puberty. They occur across the lifespan, including in childhood and later life, and they carry heavy shame — most people hide the behavior, the damage, and the attempts to stop.

The pattern

BFRBs are not single-motive. Many people describe two modes: automatic (pulling during sedentary activity, half-aware, discovered mid-pull) and focused (a deliberate response to tension, an itchy spot, a rough patch — pulling to fix a feeling). Triggers cluster around stress, boredom, perfectionistic scrutiny of the skin/scalp, and transitions. The behavior itself is often preceded by tension and followed by relief, guilt, and concealment.

What helps

The best-evidenced treatment is the Habit Reversal Training (HRT) / Comprehensive Behavioral (ComB) model:

1. Awareness training — catching the behavior earlier, mapping triggers and contexts.
2. Competing response training — a physically incompatible action (fists clenched, sitting on hands) for the minute the urge crests. Urges are waves; they pass.
3. Stimulus control — barriers and environment changes: gloves, short nails, covering mirrors at trigger times, removing magnifying mirrors.
4. Function work — treating what the behavior is doing (soothing, stimulating, numbing) with replacement behaviors matched to the function.

SSRIs help some people, especially where obsessive features or depression co-occur; N-acetylcysteine has modest evidence in trichotillomania. Medication decisions belong with a prescriber.

What helps most of all

Saying it out loud to one person. The shame loop — hide, feel alone, soothe with the behavior, hide more — breaks fastest through disclosure to a therapist, a support group, or one trusted person.