Compulsive hair pulling
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Compulsive hair pulling is a mental disorder classified among the obsessive-compulsive and related disorders. In medical terminology it is referred to as trichotillomania (from the Greek words: thrix – hair, tillein – to pull, mania – compulsion). The condition involves recurrent, difficult-to-resist pulling out of one's own hair, most often from the scalp, eyebrows, or eyelashes, which leads to visible hair loss. The disorder is chronic in nature and is often accompanied by emotional tension that decreases after performing the hair-pulling behavior. Trichotillomania can lead to significant dermatological, psychological, and social problems, and therefore requires appropriate diagnosis and interdisciplinary treatment.
Compulsive hair pulling – what is it?
Trichotillomania is an impulse-control disorder in which a person experiences a strong, increasing urge to pull out hair, despite awareness of the negative consequences of this behavior. According to the classification of the DSM-5 (Diagnostic and Statistical Manual of Mental Disorders), this disorder belongs to the group of obsessive-compulsive and related disorders.
Characteristic clinical features of trichotillomania include:
- recurrent hair pulling leading to visible thinning or focal hair loss,
- unsuccessful attempts to stop the behavior,
- feeling tension, anxiety, or discomfort before pulling out hair,
- the emergence of a sense of relief or satisfaction after performing the act.
Hair pulling may be:
- focused (focused pulling) – the person concentrates on the act and performs it deliberately,
- automatic (automatic pulling) – the behavior occurs unconsciously, e.g., while reading, watching television, or working at a computer.
Hair is most often removed from:
- the scalp,
- the eyebrows,
- the eyelashes,
- the beard,
- the pubic area.
Iregular patches of hair loss develop in these areas, where hairs of varying lengths can be observed – some have been pulled out, some are regrowing. This is an important diagnostic feature distinguishing trichotillomania from other forms of hair loss, e.g., alopecia areata.
The disorder most commonly begins during adolescence, although it can also occur in children. It is diagnosed more often in women than in men.
It is worth emphasizing that trichotillomania has a complex biological and psychological basis. Predisposing factors include, among others:
- genetic predisposition,
- neurotransmitter disturbances in the brain (especially serotonin and dopamine),
- stress and emotional tension,
- anxiety disorders,
- depression,
- obsessive-compulsive disorder (OCD).
In some patients there is also the phenomenon of trichophagia, that is, eating pulled-out hairs. In extreme cases this can lead to the formation of a so-called hair bezoar (trichobezoar) in the gastrointestinal tract, which requires surgical treatment.
Compulsive hair pulling – causes
The causes of trichotillomania are complex and include biological, psychological, and environmental factors. It is currently believed that this disorder arises from the interaction of multiple neurobiological and emotional mechanisms.
One significant element is dysfunction of the nervous system, especially within brain structures responsible for impulse control and emotion regulation. Neurobiological studies indicate possible involvement of:
- disturbances in serotonin neurotransmission,
- abnormalities in the dopaminergic system,
- changes within the basal ganglia and prefrontal cortex.
These structures play a key role in the control of habitual and compulsive behaviors, so their dysfunction may promote the development of repetitive behaviors such as hair pulling.
Genetic predispositions may also be significant. In some families there is an increased prevalence of trichotillomania and other obsessive-compulsive disorders, which suggests the involvement of hereditary factors.
Psychological and emotional factors also play a large role. In many patients, episodes of hair pulling are associated with:
- chronic stress,
- emotional tension,
- anxiety,
- feelings of frustration or boredom.
Hair pulling may serve as a tension-reduction mechanism, similar to other compulsive behaviors. For this reason, trichotillomania often co-occurs with other mental disorders, such as:
- anxiety disorders,
- depression,
- obsessive-compulsive disorder (OCD),
- impulse control disorders.
In children and adolescents, triggering factors may also include developmental changes, emotional difficulties, or stressful situations, e.g. school problems or family conflicts.
Environmental and behavioral factors are also important. Repeated manipulation of the hair, e.g. while studying or working at a computer, can over time develop into a fixed habit. In such situations the behavior is initially not compulsive, however over time it may intensify and lead to the development of full-blown trichotillomania.
Due to the multifactorial etiology of the disorder, effective treatment requires an interdisciplinary approach, including both psychological therapy and — in selected cases — pharmacological treatment.
Compulsive hair pulling – symptoms
Symptoms of trichotillomania include both dermatological changes and characteristic behaviors related to the compulsion to pull out hair. The most typical symptom is an irregular patch of hair loss, arising from repeated removal of hairs from specific areas of the body. The changes most often affect the scalp, but may also involve the eyebrows, eyelashes, beard, pubic area, or other hairy sites.
Unlike some dermatological conditions, in trichotillomania the areas of hair thinning usually have an irregular shape, and hairs of varying lengths are visible within them. This results from some hairs having been pulled out while others are just beginning to regrow.
The most commonly observed symptoms include:
- irregular patches of hair loss on the scalp or other areas of the body,
- hairs of varying lengths within the affected area,
- skin damage, such as small erosions, crusts, or redness,
- local irritation or inflammation of the skin,
- recurrent episodes of hair pulling.
Psychological and behavioral symptoms are also characteristic. People with trichotillomania often experience increasing tension, anxiety, or frustration, which decrease after pulling out a hair. The act of pulling hair itself can bring a momentary sense of relief or satisfaction, which reinforces the habit.
In many cases this behavior occurs while performing other activities, such as:
- reading,
- watching television,
- working at a computer,
- talking on the phone.
Some patients pull out hair deliberately, focusing on its texture, length, or thickness. Others do it automatically and without full awareness, which makes controlling the behavior more difficult.
Some patients also exhibit accompanying behaviors, e.g.:
- manipulating the pulled-out hair,
- biting the ends of the hairs,
- trichophagia, i.e. eating the hair.
Long-term hair pulling can lead to damage to the hair follicles, and in some cases to permanent thinning of the hair. For this reason, early recognition of the disorder and implementation of appropriate treatment are important.
Compulsive hair pulling – how to treat the habit
Treatment of trichotillomania usually requires a multidisciplinary approach, including psychotherapy, psychiatric treatment and – in case of complications – a dermatological consultation. A key element of therapy is understanding the mechanism of habit formation and teaching the patient ways to control it.
Psychotherapy
The best-documented method of treatment is cognitive-behavioral therapy (CBT), particularly a technique known as habit reversal training (HRT) – habit reversal training.
This therapy includes several stages:
- Habit awareness – the patient learns to recognize the moments preceding hair pulling.
- Identification of triggers – e.g. stress, boredom, emotional tension.
- Introduction of substitute behaviors, such as:
- squeezing a stress ball,
- manipulating objects in the hand,
- clenching the hands or performing other movements that engage the hand muscles.
- stimulus control – e.g. wearing gloves in situations that promote hair pulling.
The effectiveness of this form of therapy has been confirmed in many clinical studies.
Pharmacotherapy
In some cases a psychiatrist may introduce pharmacological treatment, especially when trichotillomania is accompanied by other mental disorders.
The most commonly used are:
- selective serotonin reuptake inhibitors (SSRIs),
- clomipramine – a drug from the tricyclic antidepressant group,
- N-acetylcysteine (NAC) – a substance affecting glutamate metabolism in the brain, which in studies has shown beneficial effects in reducing compulsive behaviors.
The choice of pharmacological therapy should always be individualized and supervised by a psychiatry specialist.
Dermatological management
Long-term hair pulling may lead to:
- damage to hair follicles,
- skin scarring,
- permanent thinning of hair.
In such situations a dermatological or trichological consultation is indicated. Treatment may include:
- therapy stimulating hair regrowth,
- treatment of inflammatory conditions of the scalp,
- regenerative skin therapy.
In dermatological practice, among others, the following are used:
- scalp mesotherapy,
- therapies stimulating hair follicles,
- laser procedures supporting skin regeneration.
It should be emphasized, however, that dermatological procedures do not eliminate the cause of the disorder, but only support skin and hair regeneration. The key element of treatment remains psychological or psychiatric therapy.
Prognosis
The course of trichotillomania is variable. In some patients the disorder is episodic and resolves after treatment, while in others it may have a chronic, relapsing course.
Factors improving prognosis include:
- early recognition of the disorder,
- rapid initiation of psychological therapy,
- support from family and the environment,
- treatment of coexisting mental disorders.
Untreated trichotillomania may lead to significant deterioration in quality of life, social problems, lowered self-esteem and permanent damage to hair follicles.
