Introduction
Bulimia Nervosa is a serious eating disorder characterized by a cycle of binge eating followed by compensatory behaviors intended to prevent weight gain. These behaviors typically include self-induced vomiting, misuse of laxatives or diuretics, fasting, or excessive exercise. Bulimia is often marked by a distorted body image and intense preoccupation with weight and shape, and it carries significant medical and psychological risks.
Causes
Bulimia nervosa is influenced by genetic vulnerability, psychological factors, and sociocultural pressures. Risk factors include a family history of eating disorders, depression, or substance use disorders; perfectionism; low self-esteem; history of trauma or abuse; and environments that emphasize thinness or body ideals. Dieting behavior often precedes the development of bulimia, as restriction can trigger binge episodes.
Symptoms
Symptoms include recurrent episodes of eating unusually large amounts of food followed by purging behaviors such as vomiting or laxative use; a feeling of being out of control during binges; preoccupation with body weight and shape; frequent trips to the bathroom after meals; dental erosion, swollen glands near the jaw, calluses on knuckles from self-induced vomiting; and mood swings often tied to eating patterns.
Diagnosis
A clinician diagnoses bulimia nervosa using DSM-5 criteria, which require recurrent binge eating and inappropriate compensatory behaviors occurring at least once per week for three months, combined with self-evaluation unduly influenced by body shape and weight. The diagnosis must be distinguished from anorexia nervosa (binge-purge subtype) and medical evaluation should assess for electrolyte imbalances and other physical complications.
Treatment
Cognitive behavioral therapy (CBT) is the most evidence-based treatment for bulimia nervosa, targeting the thoughts and behaviors that maintain the binge-purge cycle. Nutritional counseling, family-based therapy (for adolescents), and antidepressant medications (particularly SSRIs such as fluoxetine) are also used. Medical monitoring is important given the physical health risks associated with purging behaviors, including electrolyte imbalances and cardiac complications.
This information is intended for educational and informational purposes only. It should not be used in place of an individual consultation or examination or replace the advice of your health care professional and should not be relied upon to determine diagnosis or course of treatment.