Trichotillomania (Hair-Pulling Disorder)

Trichotillomania, also called hair-pulling disorder or "trich", is a mental health condition in which a person repeatedly pulls out their own hair, leading to hair loss, despite repeated attempts to stop. It is a body-focused repetitive behavior (BFRB), a group of behaviors that also includes skin picking and severe nail biting. Although it affects an estimated 1–2% of adults and adolescents, it is often poorly recognised and many people hide it for years.

The DSM-5-TR places trichotillomania in its chapter on obsessive-compulsive and related disorders. It overlaps with OCD in some ways, but differs in how pulling is driven and in which treatments work best.

History of the Term

The name was coined in 1889 by the French dermatologist François Henri Hallopeau, from the Greek words for hair (thrix), pulling (tillein) and madness (mania). The "mania" part is now widely regarded as misleading, since the condition has nothing to do with the manic episodes of bipolar disorder. That is one reason the DSM-5 added the plainer name "hair-pulling disorder" in 2013 and moved it from the impulse-control disorders to the obsessive-compulsive and related disorders. ICD-11 lists it in a similar group, under body-focused repetitive behavior disorders.

DSM-5-TR Diagnostic Criteria

The DSM-5-TR describes trichotillomania using five criteria. Clinicians look for:

1. Recurrent pulling out of one's hair, resulting in hair loss.
2. Repeated attempts to decrease or stop hair pulling.
3. Clinically significant distress or impairment in social, work or other important areas of functioning.
4. The pulling or hair loss is not due to another medical condition, such as a skin condition.
5. The pulling is not better explained by another mental disorder, for example attempts to fix a perceived flaw in appearance in body dysmorphic disorder.

Notably, the criteria do not require a build-up of tension before pulling or a feeling of relief afterward, as older versions did, because many people do not experience pulling that way. Hair loss can be patchy and may be hidden with hairstyles, makeup or head coverings. A doctor or dermatologist may be involved to rule out medical causes of hair loss.

Two Patterns: Automatic vs. Focused Pulling

Researchers and clinicians often describe two styles of pulling. They are not separate types of the disorder; most people experience both in different situations, and knowing which style dominates helps tailor treatment.

Automatic pulling

Automatic pulling happens largely outside awareness. It typically occurs during sedentary activities, such as reading, studying, watching television, scrolling a phone, driving or lying in bed. A person may realise only afterward, when they see hairs on a desk or pillow. Because it is not deliberate, simply deciding to stop rarely works; the first task is to notice it happening.

Focused pulling

Focused pulling is more deliberate and is often prompted by an emotion or sensation, such as stress, frustration, sadness, boredom, or the feel of a coarse or "wrong" hair. It can follow a sequence: searching for a particular hair, pulling it, examining or touching the root, and sometimes playing with the hair afterward. People often describe a sense of satisfaction or relief during pulling, followed by regret or shame.

Triggers and Maintenance

Common triggers fall into several groups. Emotional triggers include stress, anxiety, boredom and frustration. Sensory triggers include the texture, thickness or position of particular hairs, or itching and tingling of the scalp. Situational triggers include being alone, in front of a mirror, in a bathroom or bedroom, tired, or doing something that leaves the hands free.

Behavioral psychologists explain why the behavior persists through reinforcement. Pulling can bring brief relief from tension or boredom (negative reinforcement) or a pleasurable sensation (positive reinforcement), so the behavior becomes more likely in similar moments, a process described in operant conditioning. Over time it becomes a strongly cued habit, triggered by situations rather than decisions; see the psychology of habits for how cue-routine loops form.

A second cycle often develops around shame. Visible hair loss leads to concealment, avoidance and worry about being found out. That stress can then increase urges to pull, keeping the cycle going.

What Causes Trichotillomania?

No single cause has been identified. Research points to a mix of factors:

• Genetics: trichotillomania and other BFRBs run in families, and twin studies suggest a meaningful inherited component.
• Brain systems for habits and self-control: imaging studies suggest differences in brain circuits involved in habit formation and in stopping actions once started, though findings are still developing.
• Emotion regulation: for many people pulling becomes a way of managing difficult feelings or under-stimulation. This links it to broader work on emotion regulation.
• Life stress: onset or worsening sometimes follows stressful events, although many people cannot identify a trigger.

Trichotillomania is not caused by poor willpower, and it is not usually a sign of self-harm in the sense of intending injury. Seeing it as a recognised condition with understandable mechanisms can reduce shame and make help-seeking easier.

Consequences and Related Conditions

The most visible consequence is hair loss, which may be patchy or extensive. Many people spend considerable time and energy concealing it with wigs, hairstyles, eyebrow makeup, false eyelashes or head coverings, and avoid activities that risk exposure, such as swimming, windy weather, haircuts or physical intimacy. Social anxiety, low self-esteem and depression often follow.

Some people also chew or swallow hair (trichophagia). In rare cases this can lead to a hairball in the digestive system, called a trichobezoar, which can require medical treatment. Anyone who swallows hair and has stomach pain, nausea or other digestive symptoms should seek medical advice.

Trichotillomania commonly co-occurs with other conditions, including skin-picking (excoriation) disorder, OCD, anxiety disorders and depression. These are taken into account when planning treatment.

Trichotillomania in Children

Hair pulling in very young children, sometimes alongside thumb sucking, often fades on its own and may be closer to a soothing habit than a disorder. Pulling that starts around puberty tends to be more persistent. Parents are generally advised to avoid punishment or constant reminders, which can increase stress and secrecy, and to seek an assessment from a doctor or child mental health professional if pulling continues or causes distress. Family involvement is usually part of treatment for children.

Evidence-Based Treatment

Habit reversal training (HRT)

Habit reversal training was developed by Nathan Azrin and Gregory Nunn in 1973 and remains the best-studied psychological treatment for trichotillomania. It is a form of behavioral therapy usually delivered within a cognitive behavioral framework. Its main components are:

1. Awareness training: learning to notice the situations, sensations and early hand movements that come before pulling, often by keeping detailed records.
2. Competing response training: practising a physically incompatible action, such as clenching the fists or holding an object, for about a minute whenever an urge or early movement is noticed.
3. Social support: involving a trusted person who can encourage practice and notice progress.

Controlled trials and meta-analyses support HRT for trichotillomania, though results vary and relapse after treatment is common, so follow-up and relapse planning are important.

Comprehensive behavioral treatment (ComB)

The ComB model, described by Charles Mansueto and colleagues in 1997, broadens habit reversal by assessing five domains that can maintain pulling: sensory, cognitive, affective (emotional), motor and place (environment). Treatment then matches strategies to each person's pattern, such as tactile alternatives for sensory triggers, changes to the environment for place triggers, or emotion skills for affective triggers.

Acceptance-enhanced behavioral therapy

Researchers have combined HRT with acceptance and commitment therapy (ACT), which teaches people to notice urges and uncomfortable feelings without acting on them, and to focus on personally important goals. A controlled trial by Woods and colleagues in 2006 found benefits for this combination in adults. Similar skills appear in urge surfing, a technique for riding out urges until they pass. Elements of dialectical behavior therapy are also used when strong emotions drive focused pulling.

Medication

No medication is specifically approved for trichotillomania, and trials of various medications have produced mixed or modest results. Some people discuss medication with a psychiatrist, particularly when they also have depression, anxiety or OCD. That is an individual decision made with a doctor; behavioral therapy remains the main evidence-based approach.

Everyday Strategies and Support

Many people use practical strategies alongside or while waiting for professional help. These draw on the same principles as habit reversal and are best seen as general supports rather than a substitute for treatment:

• Tracking patterns: noting when, where and how pulling happens, and what was felt beforehand, builds awareness.
• Physical barriers: gloves, finger covers, hats or bandages during high-risk activities can interrupt automatic pulling.
• Keeping hands busy: holding a textured object, putty or fidget item while reading or watching screens.
• Changing the environment: adjusting lighting, removing magnifying mirrors or tweezers, or limiting time alone in high-risk places.
• Self-compassion: shame tends to fuel the cycle, so treating setbacks with patience rather than self-criticism matters. See self-compassion practice.

Peer support and education are available through organisations such as the TLC Foundation for Body-Focused Repetitive Behaviors. If pulling is persistent, distressing or affecting daily life, a mental health professional experienced in BFRBs can offer a proper assessment and structured treatment.

Conclusion

Trichotillomania is a recognised condition, not a bad habit or a sign of weakness. It involves a mix of automatic and focused pulling maintained by relief, sensory reward and shame. Behavioral approaches, especially habit reversal training and its comprehensive and acceptance-based extensions, have the best research support, though relapses are common and progress is often gradual. Greater awareness helps people recognise the condition earlier and seek support with less shame.