Resumen TRASTORNOS ALIMENTICIOS (ANOREXIA, BULIMIA, ATRACONES, PICA, RUMIACIÓN Y RESTRICCIÓN) DSM 5

Introduction to Eating Disorders

Overview of Eating Disorders

• Eating disorders are defined as syndromes characterized by clinically significant alterations in cognitive state, emotional regulation, or behavior affecting various functional areas of a person’s life.

• These disorders can stem from psychosocial factors, experiences, neurological issues, genetic inheritance, or a combination of these elements.

Pica Disorder

Characteristics and Criteria

• Pica is characterized by the persistent consumption of non-food substances such as paper, soap, clothing, hair, dirt, and metals for at least one month. This does not include junk food consumption.

• The ingestion must be inappropriate for the individual's age; while young children may exhibit normal exploratory behaviors (putting objects in their mouths), this is not typical for adolescents or adults.

• The behavior should not be part of culturally accepted practices and may occur alongside other mental health disorders like cognitive disabilities or autism spectrum disorder.

Prevalence and Causes

• Pica has an estimated prevalence of about 5% among school-aged children and is more common in pregnant women; however, its prevalence in adolescents and adults remains unclear but is often linked to cognitive deficits.

• Common causes include high-stress situations throughout life stages, neglect or abuse experiences, developmental issues like autism, episodes of psychosis or schizophrenia, and prolonged malnutrition or hunger.

Treatment Approaches

• Treatment involves addressing any nutrient deficiencies caused by substance ingestion under medical supervision. Psychological treatment focuses on behavioral therapy that modifies eating behaviors through environmental adjustments and family education.

• Behavioral treatments may involve aversive conditioning techniques where negative consequences are associated with pica behaviors while rewarding normal food consumption habits. Medications might help normalize eating patterns if related to developmental disorders like intellectual disability.

Rumination Disorder

Definition and Symptoms

• Rumination disorder involves the voluntary expulsion of food from the stomach followed by re-chewing or spitting it out within approximately 30 minutes after meals without involuntary nausea or discomfort typically associated with vomiting.

• Diagnostic criteria include repeated regurgitation over at least one month that cannot be attributed to gastrointestinal problems like reflux nor exclusively occurring during other eating disorders such as anorexia nervosa or bulimia nervosa.

Social Perception and Prevalence

• Individuals with rumination disorder often perceive their behavior as socially acceptable yet attempt to hide it due to potential embarrassment; they may limit food intake leading to nutritional deficiencies. This disorder can manifest at any life stage but is particularly uncommon outside individuals with cognitive disabilities.

• Recent data indicates a prevalence rate between 1% to 2% among school-aged children without gender differences noted in epidemiology studies regarding this disorder's occurrence.

Underlying Causes

Treatment of Rumination Disorder and Avoidant/Restrictive Food Intake Disorder

Treatment Approaches for Rumination Disorder

• The most effective treatment for rumination disorder is behavioral therapy, particularly when the patient does not have cognitive disabilities. This therapy helps individuals identify situations that trigger rumination.

• Techniques such as pragmatic breathing are employed to prevent abdominal contractions and regurgitation. Biofeedback is also used to recognize regurgitation triggers.

• Occasionally, medications like esomeprazole or mebrasol are prescribed to protect the esophagus from food reflux, while behavioral therapy aims to reduce the frequency and intensity of regurgitation.

Understanding Avoidant/Restrictive Food Intake Disorder (ARFID)

• ARFID is characterized by consuming very little food and avoiding certain types due to specific characteristics, unlike anorexia nervosa or bulimia nervosa which involve body image concerns.

• This disorder can lead to significant weight loss or slower growth in children, resulting in difficulties with social activities and potential life-threatening nutritional deficiencies.

• Patients often avoid foods based on sensory attributes (taste, texture, color), leading to a limited diet that may lack essential nutrients.

Diagnostic Criteria for ARFID

• Key diagnostic criteria include lack of interest in eating, avoidance due to food characteristics, and failure to meet nutritional needs.

• Significant weight loss or failure to grow normally in children is common; dependence on enteral feeding or oral nutritional supplements may occur.

• The disorder must not be better explained by a lack of available food or be socially accepted practices. It should also not relate to distorted body image perceptions.

Epidemiology and Causes of ARFID

• ARFID was first diagnosed under DSM-5; its prevalence is about 0.3% among 15-year-olds according to an Australian study. It can occur at any life stage but is more frequent during infancy.

• There’s no gender difference in prevalence; causes are linked with poor parent-child relationships where mealtime becomes stressful due to perceived aggression from parents regarding food rejection.

Treatment Strategies for ARFID

• Cognitive-behavioral approaches combined with family-based treatments show promising results. These focus on addressing irrational fears related to eating through exposure sessions.

• For underweight children with ARFID, interdisciplinary support involving nutritionists and endocrinologists aids recovery efforts.

• Early intervention is crucial as untreated symptoms often persist into adulthood.

Anorexia Nervosa: Characteristics and Implications

Defining Anorexia Nervosa

Anorexia Nervosa: Diagnostic Criteria and Insights

Diagnostic Criteria for Anorexia Nervosa

• Anorexia nervosa is characterized by a significant restriction of food intake leading to a notably low body weight relative to age, sex, developmental stage, and physical health.

• Individuals exhibit an intense fear of gaining weight or becoming fat, resulting in behaviors that hinder weight gain despite being underweight.

• There is a distortion in self-perception regarding body weight and shape, along with an inability to recognize the severity of their low weight.

Types of Anorexia Nervosa

• Two types exist:

• Binge-eating/Purging Type: Involves recurrent episodes of binge eating followed by purging behaviors (vomiting or misuse of laxatives).

• Restricting Type: Characterized by dietary restrictions without binge-eating or purging over the last three months.

Severity Classification

• The severity of anorexia nervosa is classified based on Body Mass Index (BMI):

• Mild: BMI ≥ 17 kg/m²

• Moderate: BMI between 16.0 and 16.99 kg/m²

• Severe: BMI between 15.0 and 15.99 kg/m²

• Extreme: BMI < 15 kg/m²

Prevalence and Demographics

• The prevalence rate is approximately:

• Women: 0.08% annually

• Men: 0.01%

• The occurrence ratio is about ten women for every one man diagnosed with anorexia nervosa; however, prevalence varies across life stages.

Risk Factors for Development

• Onset typically occurs between ages twelve and forty but can happen outside this range due to stressful life events such as loss or dissatisfaction with body image.

• Temperamental factors include anxiety disorders or obsessive traits increasing risk; environmental factors involve societal pressures valuing thinness.

Treatment Approaches for Anorexia Nervosa

Interdisciplinary Treatment Strategy

• Treatment involves a collaborative approach among medical professionals including doctors, psychologists, psychiatrists, and nutritionists focusing on caloric needs and healthy eating habits.

Psychological Interventions

• Cognitive Behavioral Therapy (CBT) has shown effectiveness in normalizing eating behaviors while addressing distorted beliefs related to food intake.

Family Involvement in Treatment

• Family therapy has proven beneficial particularly for adolescent patients dealing with anorexia nervosa.

Bulimia Nervosa Overview

Defining Characteristics of Bulimia Nervosa

• Bulimia nervosa features uncontrollable binge eating episodes followed by compensatory behaviors like self-induced vomiting or excessive use of laxatives.

Diagnostic Criteria for Bulimia Nervosa

• Recurrent binge-eating episodes are defined as consuming large amounts within a specific timeframe accompanied by feelings of lack of control during these episodes.

Compensatory Behaviors

• Following binges, individuals engage in inappropriate compensatory actions at least once weekly over three months to prevent weight gain.

Understanding Bulimia and Binge Eating Disorders

Overview of Bulimia Nervosa

• Bulimia nervosa often occurs in individuals with normal or slightly above-normal weight. During binge episodes, they typically consume low-calorie foods to avoid triggering further binges.

• The lifetime prevalence of bulimia is approximately 0.46% to 1.5% in women and 0.05% to 0.08% in men, indicating a higher occurrence in women (10:1 ratio).

• This disorder is more common during adolescence and young adulthood, particularly in developed countries like the U.S., New Zealand, Canada, and parts of Europe.

Causes and Risk Factors

• The onset usually occurs between childhood and age 40; however, cases outside this range are reported. Stressful life events or dieting for weight loss can trigger its development.

• Temperamental factors include concerns about weight, low self-esteem, anxiety traits, and childhood experiences of pressure or anxiety.

• A family history of eating disorders increases the risk; genetic factors may also play a role.

Treatment Approaches

• Effective treatment combines psychological therapy, antidepressant medications, and nutritional education aimed at establishing healthy eating habits.

• Cognitive-behavioral therapy (CBT) is particularly effective for normalizing eating patterns while addressing negative beliefs and unhealthy behaviors.

Binge Eating Disorder Explained

Characteristics of Binge Eating Disorder

• Binge eating disorder involves consuming large quantities of food uncontrollably without it being linked to special occasions like parties.

• Individuals often experience guilt and shame after binge episodes; any type of food can be consumed during these binges.

Diagnostic Criteria

• Recurrent binge episodes are defined as consuming an amount significantly larger than most people would eat within a similar timeframe while feeling a lack of control over eating.

• Associated symptoms include rapid eating, discomfort from overeating when not hungry, emotional distress post-bingeing (guilt/shame), and physical discomfort following binges.

Prevalence and Demographics

• Binge eating episodes must occur at least once weekly for three months; unlike bulimia nervosa or anorexia with purging behaviors, individuals do not engage in compensatory actions post-bingeing.

• The severity ranges from mild (1–3 binges per week) to extreme (14+ binges per week). Lifetime prevalence rates are estimated at 1.25% to 3.5% for women and 0.2% to 2% for men.

Conclusion on Binge Eating Disorder

Understanding Binge Eating Disorder

Causes and Psychological Factors

• Rigid diets can trigger binge eating episodes as individuals may feel the need to compensate for restricted calories.

• Negative self-perception, low self-esteem, stress, and depression are associated with binge eating disorder.

Treatment Approaches

Cognitive Behavioral Therapy (CBT)

• CBT addresses beliefs and thoughts that lead to binge eating episodes, focusing on negative feelings about body image and mood.

• Behavioral tools are provided to help regulate eating patterns effectively.

Pharmacological Interventions

• Antidepressant medications can aid in reducing binge eating episodes.

• Medications like exenatide are approved for treating binge eating disorder, potentially decreasing the frequency of binges and causing slight weight loss.

• Appetite suppressants may also be utilized in treatment plans.

Important Considerations

• The video serves an informative purpose and should not replace professional psychological assessment or treatment.