by the pines

Definition

Individuals with trichotillomania repetitively pull out their own hair. Trichotillomania as an impulse-control disorder. Some researchers view it as a type of affective or obsessive-compulsive disorder. Nail-biting, skin-picking, and thumb-sucking are considered to be related conditions.

Description

Trichotillomania involves hair-pulling episodes that result in noticeable hair loss. Although any area of the body can be a target, the most common areas are the scalp, followed by the eyelashes, eyebrows, and pubic region. Hair-pulling can occur without the individual’s awareness, but is frequently preceded by a sense of increasing tension and followed by a sense of relief or gratification. The resulting hair loss can be a source of embarrassment or shame. Because of a tendency to hide symptoms, and because professionals are relatively unfamiliar with the disorder, individuals either may not seek, or are offered treatment. Untreated trichotillomania can result in impaired social functioning and medical complications.

Causes and symptoms

Causes

Scientific research regarding trichotillomania has been conducted primarily in the past 10 years and causes are only theoretical. Psychoanalytic theories suggest that the behavior is a way of dealing with unconscious conflicts or childhood trauma (such as sexual abuse). Biological theories look for a genetic basis. For instance, people with trichotillomania often have a first-degree relative with an obsessive-compulsive spectrum disorder. Researchers are also evaluating similarities between trichotillomania and Tourette’s disorder. Behavioral theories assume that symptoms are learned, that a child may imitate a parent who engages in hair-pulling. The behavior may also be learned independently if it serves a purpose. For example, hair-pulling may begin as a response to stress and then develop into a habit.

Symptoms

According to the Diagnostic and Statistical Manual of Mental Disorders, (DSM-IV-TR), produced by the American Psychiatric Association and used by most mental health professionals in North America and Europe to diagnose mental disorders, the following conditions must be present for a diagnosis of trichotillomania:

• noticeable hair loss (alopecia) due to recurrent hair-pulling
• tension immediately before hair-pulling, or when attempting to resist hair-pulling
• reduction of tension, or a feeling of pleasure or gratification, immediately following hair-pulling
• significant distress or impairment in social, occupational, or other important areas of functioning

In addition, the DSM-IV-TRrequires that hair-pulling not be due to another medical or mental disorder. The tension-release requirement is controversial because 17% of people who otherwise qualify for this diagnosis do not experience this.

Symptoms usually emerge in early adolescence. Episodes may last a few minutes or a few hours during periods of stress or relaxation. Hairs with unique textures or qualities may be preferred. The pulling may include rituals, such as twirling hair off or examining the root. Half of those individuals with trichotillomania engage in oral behaviors—running hair across the lips or through the teeth, biting off the root (trichophagy), or eating hair (trichophagia). The usually try to control their behavior in the presence of others and may hide the affected areas. Symptoms may come and go for weeks, months, or years at a time.

Demographics

Once regarded as rare, trichotillomania is now considered more common, affecting 1–4% of people in the general population. When the tension-release requirement is excluded, trichotillomania occurs in adult females (3.4%) more often than adult males (1.5%). Among children, both genders are affected equally.

Diagnosis

Other possible causes of symptoms must first be ruled out. Hair loss may have a medical cause, such as a dermatological condition. Hair-pulling may have another psychological cause, such as a delusion or hallucination in schizophrenia.

Severity of symptoms is also important. Twisting or playing with hair when nervous does not qualify as trichotillomania. If symptoms are minor or undetectable, a diagnosis should be given only if the individual expresses significant distress. Children should be given the diagnosis only if symptoms persist because hair-pulling may be a temporary phase, much like thumb-sucking.

If individuals deny symptoms, hair-pulling behavior can be assessed by objective measures such as the presence of short, broken hairs or damaged follicles. Some psychological assessment instruments are also available.