Eating Disorders
Eating disorders in childhood and adolescence encompass a group of mental health conditions that affect eating behaviors and body image. These disorders are characterized by significant concerns related to food, weight, and physical appearance, which can have a substantial impact on the physical and mental health of children and adolescents.
Anorexia Nervosa
What Is Anorexia Nervosa?
Anorexia nervosa is characterized by a significant restriction of food intake, leading to a markedly low body weight in relation to age, sex, developmental trajectory, and physical health. Individuals with this disorder have an intense fear of gaining weight or becoming overweight and often experience a distorted perception of their body, perceiving themselves as overweight even when they are underweight.
DSM-5 Criteria
• Restriction of food intake leading to a significantly low body weight relative to what is expected for the individual’s age and development.
• Intense fear of gaining weight or becoming overweight, even when the individual is underweight.
• Disturbance in the perception of body weight or shape, or a lack of recognition of the seriousness of the current low body weight.
Etiology
Contributing factors may include social pressures related to body image, family factors such as interpersonal pressures or conflicts, genetic vulnerability, and biological factors involving systems associated with appetite and mood regulation.
Prognosis
Without treatment, anorexia nervosa can lead to serious physical complications, including malnutrition, cardiovascular problems, and reduced bone mineral density or osteoporosis. When identified and treated early, the likelihood of recovery improves considerably, although some individuals may experience a chronic or recurrent course.
Treatment
Psychological Therapy: Cognitive Behavioral Therapy (CBT) and family-based interventions may be beneficial in the treatment of anorexia nervosa.
Medical Support: Medical monitoring is essential to address nutritional rehabilitation, restore a healthy weight, and prevent or manage medical complications.
Medication: Medication is not considered a primary treatment for anorexia nervosa itself. However, pharmacological treatment may sometimes be considered for co-occurring psychiatric conditions, such as depression or anxiety, depending on the individual clinical presentation.
Bulimia Nervosa
What Is Bulimia Nervosa?
Bulimia nervosa is characterized by recurrent episodes of binge eating followed by inappropriate compensatory behaviors intended to prevent weight gain, such as self-induced vomiting, misuse of laxatives, fasting, or excessive exercise.
DSM-5 Criteria
• Recurrent episodes of binge eating, during which the individual consumes an unusually large amount of food within a relatively short period and experiences a sense of loss of control over eating.
• Recurrent inappropriate compensatory behaviors, such as self-induced vomiting, misuse of laxatives, fasting, or excessive exercise, intended to prevent weight gain.
• Self-evaluation is excessively influenced by body shape and weight.
Etiology
Contributing factors may include social and media pressures regarding body image, genetic vulnerability, family and environmental influences, psychological factors, and biological mechanisms associated with mood and appetite regulation.
Prognosis
Bulimia nervosa may lead to serious medical complications, including gastrointestinal problems, dental erosion, dehydration, and electrolyte disturbances. However, with appropriate treatment, many individuals experience substantial improvement or recovery.
Treatment
Cognitive Behavioral Therapy (CBT): CBT is an important evidence-based psychological treatment for bulimia nervosa and helps individuals modify problematic eating behaviors as well as dysfunctional thoughts and beliefs related to weight and body image.
Medical Support: Medical assessment and monitoring are important for identifying and treating physical complications, particularly dehydration and electrolyte abnormalities.
Medication: Certain antidepressants, particularly fluoxetine, may be used as part of the treatment of bulimia nervosa when clinically appropriate.
Binge-Eating Disorder
What Is Binge-Eating Disorder?
Binge-eating disorder is characterized by recurrent episodes of consuming unusually large amounts of food accompanied by a sense of loss of control over eating. Unlike bulimia nervosa, these episodes are not regularly followed by inappropriate compensatory behaviors such as self-induced vomiting, laxative misuse, fasting, or excessive exercise. Individuals may experience significant distress, guilt, or shame associated with these episodes.
DSM-5 Criteria
• Recurrent episodes of binge eating, which may involve eating more rapidly than usual and consuming large amounts of food within a relatively short period.
• The absence of recurrent inappropriate compensatory behaviors such as self-induced vomiting or laxative misuse.
• Marked emotional distress associated with binge-eating episodes.
Etiology
Contributing factors may include genetic vulnerability, emotional difficulties, impulsivity, environmental influences, and sociocultural pressures related to body image.
Prognosi
Binge-eating disorder may be associated with obesity and related medical complications, including metabolic and cardiovascular conditions. Appropriate psychological and medical treatment can substantially improve symptoms, functioning, and overall prognosis.
Treatment
Psychological Therapy: Cognitive Behavioral Therapy (CBT) and Interpersonal Psychotherapy (IPT) can help individuals regulate eating behaviors and address the emotional and interpersonal factors associated with binge eating.
Medical Support: Medical assessment may be necessary to identify and manage weight-related and metabolic complications.
Medication: In selected cases, pharmacological treatment may be considered to reduce binge-eating symptoms and/or treat co-occurring psychiatric conditions.
PICA
What Is Pica?
Pica is characterized by the persistent consumption of non-food, non-nutritive substances, such as soil, paper, paint, or other materials, for a period of at least one month. The disorder is more commonly identified in childhood but may occur at any age.
DSM-5 Criteria
• Persistent eating of non-nutritive, non-food substances for at least one month.
• The behavior is inappropriate for the individual’s developmental level.
• The eating behavior is not part of a culturally supported or socially normative practice.
Etiology
Potential contributing factors include nutritional deficiencies, particularly iron or zinc deficiency, psychosocial stressors, environmental factors, and developmental conditions. Pica may occur more frequently in individuals with certain neurodevelopmental disorders, including autism spectrum disorder and intellectual disability.
Prognosis
Without appropriate intervention, pica may result in significant medical complications, including poisoning, gastrointestinal obstruction or injury, infections, and nutritional problems. Early identification and treatment of the underlying causes and associated medical or developmental conditions can substantially improve the prognosis.