Study finds boredom, not stress, drives hair-pulling disorder

A recent study has found that trichotillomania, or compulsive hair-pulling, may not be primarily linked to stress or anxiety as commonly believed. Instead, the intensity of the urge to pull hair was the strongest factor associated with the behavior, while boredom emerged as a significant trigger for repeated episodes.

Researchers at Heidelberg University Hospital monitored 61 adults with trichotillomania over a 10-day period to better understand what happens before and during hair-pulling episodes, rather than relying on participants’ recollections hours later.

Published in the journal Comprehensive Psychiatry, the study used real-time assessment methods. Participants received seven alerts daily between 8 a.m. and 10 p.m., each time recording their emotional state, the strength of their urge to pull hair, and whether they had engaged in the behavior since the last check-in. They could also log episodes as they occurred.

Over the monitoring period, researchers collected 2,557 momentary assessments and 702 hair-pulling episodes for analysis. Results showed participants were more likely to pull their hair when their urge was stronger. A heightened urge at one assessment also predicted a higher likelihood of hair-pulling at the next check-in.

The researchers also observed that a previous episode increased the chances of another occurring soon after, suggesting the behavior can persist and repeat throughout the day.

Negative emotions not the sole driver

Negative feelings such as anxiety, anger, sadness, guilt, and stress were linked to stronger urges to pull hair. Rumination, fatigue, and boredom also increased these urges, while positive emotions were associated with weaker urges.

However, not all emotions were equally predictive of the behavior. Boredom was a reliable indicator of both upcoming and immediate hair-pulling episodes, while fatigue increased the urge but did not directly predict the behavior.

These findings challenge the idea that trichotillomania is mainly about emotion regulation. According to this theory, individuals pull their hair to cope with uncomfortable feelings like anxiety or frustration, then feel relief. But previous research has offered mixed evidence, and hair-pulling can also occur when a person is distracted or not fully aware of their actions.

The researchers noted: "Most current studies focus primarily on the behavior itself, overlooking the motivation and underlying factors that may influence it."

Boredom and fatigue among top influences

The study suggests that low levels of stimulation or energy may play an important role in some hair-pulling episodes. The researchers wrote: "States of low energy may increase susceptibility to urges."

This idea is based on a theory that repetitive behaviors can help regulate internal stimulation levels, making hair-pulling more likely during boredom or low arousal.

The researchers added: "The consistent predictive role of boredom and fatigue, in particular, suggests that models focusing solely on emotional dysfunction may be insufficient."

The study also indicates that trichotillomania may not present the same way in all individuals, raising the possibility of subtypes of the disorder with different factors driving urges and behavior.

Trichotillomania is a body-focused repetitive behavior that can lead to hair loss and significant psychological or social problems. It often occurs alongside other mental health conditions such as anxiety, depression, post-traumatic stress disorder, obsessive-compulsive disorder, and attention deficit hyperactivity disorder.

References to hair-pulling behavior are not new; historical records show the earliest written mention in Hippocrates’ "Epidemics III" in 410 BC. About 60 years later, Aristotle discussed such habits, including hair-pulling and nail-biting, in "Nicomachean Ethics."

Overall, the findings suggest that understanding trichotillomania requires looking at what happens between the urge and the behavior, not just focusing on negative emotions. According to the study, factors such as boredom, stimulation, sensory experiences, environmental cues, and awareness of the urge may all play a role in this process.