Final Flashcards
How does the eating pathology category challenge HiTOP conceptualization and categories?
- Bulimia and binge eating have more externalizing features
- Anorexia has more internalizing features
What are the key symptoms of eating disorders?
- Cognitive Restraint
- Dietary Restriction
- Binge Eating
- Compensatory Behaviours (purging & non-purging)
- Weight/Shape Concern
Describe cognitive restraint in eating disorders
Cognitive effort focused on the intent to reduce the amount of food consumption
Describe dietary restriction in eating disorders
- Actual decrease in energy intake
- Changing the frequency, quantity or types of food
- Ex: amount of food eaten and/or what foods are eaten
Describe binge eating in eating disorders
- Consuming an objectively large amount of food
- In a discrete (short) period of time
- With a feeling of loss of control (person wants to stop eating but can’t)
Describe compensatory behaviours in eating disorders
Purging:
- Attempt to physically remove food from system
- Ex: self-induced vomiting, consuming laxatives, diuretics
- These behaviours provide people with temporary relief (relieve negative affect)
- These are ineffective at reducing the calories
- These behaviours can have detrimental effects on health overtime
Non-Purging:
- Counteract the ingestion of food indirectly
- These function primarily to reduce the emotions linked with food
- Ex: restriction (after eating a lot, engaging in restriction of consumption to make up for it), compensatory exercise
What are some examples of the detrimental effects that purging behaviours can have on health overtime?
- Vomiting can lead to dental problems, oesophageal problems, high GI problems
- Laxatives overuse is associated with lower GI problems
- Diuretics linked with very low levels of electrolytes
Describe weight/shape concern in eating disorders
- A relationship with one’s weight/shape characterized by:
- Body dissatisfaction
- Preoccupation with weight/shape
- Over-valuation of weight/shape
- Weight and/or shape play an excessively important role in determining self-worth
Describe Anorexia Nervosa (AN)
- Term introduced in 1873 by Sir William Gull -> older concept
- Anorexia means absence of appetite
- Anorexia Nervosa means anxious nervous absence of appetite
- Anorexia Nervosa is the diagnosis
- Cases/phenomena have been described for centuries
- Typically present: body dissatisfaction, weight concerns, undue influence of weight/shape on self-esteem
- Sometimes present: binge eating, purging, excessive exercise
- Extreme/intense fear of gaining any weight and often altered perception of shape of body
- Sub-types of either restrictive only (someone who only engages in restrictive eating) or binge-purge
- Atypical anorexia (when all of these behaviours are present but no BMI issues)
- Men are less likely to be diagnosed with AN because of high muscle mass
- There’s often denial about having a problem -> this makes treatment complicated
Describe Bulimia Nervosa (BN)
- More recent: 1979 (Gerald Russell)
- Noticed patients that used a pattern of binge eating followed by self-induced vomiting
- Descriptions of binge-eating go back further
- Typically present: body dissatisfaction, weight concerns, dietary restrictions
- People with BN unlike with AN are more typically a normal weight or slightly overweight
- Severity of BN is based on frequency and severity of compensatory behaviours
What are the DSM diagnoses of eating disorders
- Anorexia Nervosa (AN)
- Bulimia Nervosa (BN)
- Binge Eating Disorder (BED)
- Both BN and AN don’t require significant distress or impairment for diagnosis
What are the core features of Anorexia Nervosa (AN)?
- Weight that’s significantly lower than expected for height and age (usually, BMI < 17.5)
- Dietary restrictions
What are the core features of Bulimia Nervosa (BN)?
- Binge eating
- Compensatory behaviors
- Undue influence of weight/shape on self-esteem
What are the core features of Binge Eating Disorder (BED)?
- Binge eating (binge episodes with purging or other compensatory behaviours)
- Absence of compensatory behaviors
Describe Binge Eating Disorder (BED)
- Binge episodes with engaging in purging or other compensatory behaviours
- Usually in normal or overweight weight range
- Severity based on frequency and amount of binge episodes
- Sometimes present: body dissatisfaction, weight concerns, dietary restrictions
- Must have significant distress
Describe Avoidant/ restrictive food intake disorder (ARFID)
○ Failure to meet energy needs accompanied by significant weight loss
○ Significant nutritious deficiency
○ Can’t be explained by lack of food or culture
○ Food is available and they’re choosing not to consume it
○ Atypical -> seems to not be related to weight or shape of body
What are the residual diagnostic categories for eating disorders?
- Avoidant/ restrictive food intake disorder (ARFID)
- Other Specified Feeding and Eating Disorder (OSFED)
- Unspecified Feeding and Eating Disorder (USFED)
Describe Other Specified Feeding and Eating Disorder (OSFED)
- Subthreshold AN, BN, BED
- Atypical AN
- Purging Disorder (engaging in purging without binges)
- Night Eating Syndrome (eating a lot at night)
What percentage of treatment-seeking individuals with eating disorders meet criteria for OSFED/USFED?
Between 30-50%
Describe the diagnostic migration of eating disorders
- Individuals who meet criteria for one eating disorder at one point in time are very likely to meet criteria for another eating disorder at another point in time
- AN-restricting subtype (AN-R) and AN-binge-purge subtype (AN-BP) often migrate with each other
- AN-binge-purge subtype (AN-BP) and BN often migrate with each other
- BN and BED often migrate with each other
What are the statistics for the eating pathology among women in Montreal?
- 8.7% frequent compensatory behaviours
- 4.1% frequent binge eating (objective)
- 1.1% regular purging behaviours
- 14.9% residual, OSFED-type category
- 0% AN
- 0.6% BN
- 3.8% BED
- 0.6% purging disorder
Describe AN epidemiology
- Prevalence: 0.7% (rare)
- Gender ratio: 10 women:1 men
- Age of onset: late adolescence
- Mortality: 5.1%
Describe BN epidemiology
- Prevalence: 1-3%
- Gender ratio: 10 women:1 men
- Age of onset: late adolescence - early adulthood
- Mortality: 1.7%
Describe BED epidemiology
- Prevalence: 2-5%
- Gender ratio: 2 women:1 men
- Age of onset: early - mid adulthood
- Mortality: more research needed
Which eating disorder is more prevalent in boys and has an onset in infancy?
- ARFID
- Much less common for onset in adulthood
Describe the SWAG stereotype for the epidemiology of eating disorders
- Skinny White Affluent Girls (SWAG)
- Underweight = < 6% of ED population
- Males = 25% of ED population -> likely because of different presentations in males
- Sexual and gender minorities have higher ED prevalence
- Ethnic minority populations have high rates of EDs
- Multiracial individuals + Indigenous have highest rates of EDs
- No relationship between high SES and EDs -> but there is an association with food insecurity
What are some common differential diagnoses with eating disorders?
- Body Dysmorphic Disorder (people have a distorted sense of their body)
- Obsessive Compulsive Disorder (ritualistic and obsessive thoughts present in eating disorders followed by compulsions to undo the thoughts)
- Anxiety disorders (esp. SAD, GAD)
- Depression
- Psychosis-spectrum disorders
What are some effects of malnutrition?
- Low mood
- Anhedonia
- Insomnia
- Preoccupation and rituals related to food
What are some extensive comorbidities with eating disorders?
- Mood disorders
- Substance disorders
- Personality disorders
- Anxiety disorders
Describe the comorbidity between eating disorders and depression
- AN: 25-50% concurrent Depression
- AN: 50-70% lifetime hx Depression
- BN: even higher
Describe the comorbidity between eating disorders and personality disorders
- Commonly comorbid -> 50-70%
- Restricting AN and Cluster C Personality Disorders
- AN-BP and clusters B and C
- BN and cluster B