Health Library

Trichotillomania

Trichotillosis; Compulsive hair pulling

Trichotillomania is hair loss from repeated urges to pull or twist the hair until it breaks off. People are unable to stop this behavior, even as their hair becomes thinner.

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Causes

Trichotillomania is a type of impulsive control disorder. Its causes are not clearly understood.

It may affect as much as 4% of the population. Women are 4 times more likely to be affected than men.

Symptoms

Symptoms most often begin before age 17. The hair may come out in round patches or across the scalp. The effect is an uneven appearance. The person may pluck other hairy areas, such as the eyebrows, eyelashes, or body hair.

These symptoms are most often seen in children:

• An uneven appearance to the hair
• Bare patches or all around (diffuse) loss of hair
• Bowel blockage (obstruction) if people eat the hair they pull out
• Constant tugging, pulling, or twisting of hair
• Denying the hair pulling
• Hair regrowth that feels like stubble in the bare spots
• Increasing sense of tension before the hair pulling
• Other self-injury behaviors
• Sense of relief, pleasure, or gratification after the hair pulling

Most people with this disorder also have problems with:

• Feeling sad or depressed
• Anxiety
• Poor self-image

Exams and Tests

Your health care provider will examine your skin, hair, and scalp. A piece of tissue may be removed (biopsy) to find other causes, such as a scalp infection, and to explain the hair loss.

Treatment

Experts don't agree on the use of medicine for treatment. However, naltrexone and selective serotonin reuptake inhibitors (SSRIs) have been shown to be effective in reducing some symptoms. Behavioral therapy and habit reversal may also be effective.

Outlook (Prognosis)

Trichotillomania that begins in younger children (less than 6 years old) may go away without treatment. For most people, the hair pulling ends within 12 months.

For others, trichotillomania is a lifelong disorder. However, treatment often improves the hair pulling and the feelings of depression, anxiety, or poor self-image.

Possible Complications

People can have complications when they eat the pulled-out hair (trichophagia). This can cause a blockage in the intestines or lead to poor nutrition.

Prevention

Early detection is the best form of prevention because it leads to early treatment. Decreasing stress can help, because stress may increase compulsive behavior.

References

American Psychiatric Association website. Obsessive-compulsive and related disorders. Diagnostic and Statistical Manual of Mental Disorders. 5th ed. Text Revision (DSM-5-TR), Washington, DC: American Psychiatric Association Publishing; 2022.

Bains A, Sanders KM. Disruptive, impulse-control, and conduct disorders. In: Stern TA, Wilens TE, Fava M, eds. Massachusetts General Hospital Comprehensive Clinical Psychiatry. 3rd ed. Philadelphia, PA: Elsevier; 2025:chap 23.

Martin KL. Disorders of hair. In: Kliegman RM, St. Geme JW, Blum NJ, et al, eds. Nelson Textbook of Pediatrics. 22nd ed. Philadelphia, PA: Elsevier; 2025:chap 703.

Review Date: 5/4/2024  

Reviewed By: Fred K. Berger, MD, addiction and forensic psychiatrist, Scripps Memorial Hospital, La Jolla, CA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

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