Psychology 2310A/B Lecture Notes - Bulimia Nervosa, Binge Eating, Water–Electrolyte Imbalance

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Eating Disorders
DSM-IV: Eating Disorders
Anorexia Nervosa: characterized by the pursuit of thinness to dangerously low
weight levels
Bulimia Nervosa: characterized by a binge-purge syndrome in people who are
generally in the normal weight range
DSM-5: Feeding and Eating Disorders
Pica: characterized by an appetite for substances largely non-nutritive, such as
ice, clay, chalk, dirt, or sand
Avoidant/Restrictive Food Intake Disorder: Individuals who meet the criteria
for ARFID have developed some type of problem with eating. Difficulty digesting
certain foods, avoiding certain colors or textures of food, eating only very small
portions, having no appetite, or being afraid to eat after a frightening episode of
choking or vomiting.
Anorexia Nervosa
Bulimia Nervosa
Binge-Eating Disorder: characterized by binge eating without subsequent
purging episodes
Rumination Disorder: characterized by effortless regurgitation of most meals
following consumption
Anorexia Nervosa (DSM-IV)
Refusal to maintain minimally normal body weight for one’s age and height
Intense fear of gaining weight or being fat
Disturbance in body image
Amenorrhea in women past puberty
oRestricting Type
oBinge eating / Purging Type
Anorexia – Associated Features
Depressive symptoms
Obsessive-compulsive features
Low self-esteem
Medical complications
oAnemia, dehydration, low metabolism rate
oElectrolyte imbalance, endocrine abnormalities
oEEG abnormalities
oErosion of dental enamel
oLiver damage, cardiovascular problems
Age, Culture, Gender
> 90% female
Average age of onset = 17
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