Eating disorders Flashcards
Bulimia nervosa definition including ICD-11 and DSM-V Criteria
biochemical features of bulimia
Hypokalaemia: ECG will show too
Low sex hormone levels (FSH, LH, oestrogen and testosterone)
Raised growth hormone and cortisol levels
Hypercholesterolaemia
metabolic alkalosis in ABG in some cases
psychological symptoms of bulimia
physical symptoms of bulimia
differential diagnoses of bulimia
- Anorexia Nervosa (AN)
- Kleine-Levin Syndrome: Characterized by hypersomnia, hypersexuality, and hyperphagia.
- Kluver-Bucy Syndrome: Involves compulsive eating, associated with bilateral medial temporal lobe lesions.
management of bulimia
If bulimia-nervosa-focused guided self-help is unacceptable, contraindicated, or ineffective after 4 weeks of treatment, NICE recommend that we consider individual eating-disorder-focused cognitive behavioural therapy (CBT-ED)
anorexia nervosa definition: DMS-5 criteria
BMI adults (<18.5 – mild risk AN, <15 – moderate risk, <13 – high risk)
anorexia nervosa risk factors
anorexia nervosa features: history and examination
investigations in anorexia nervosa
Blood results:
Deranged electrolytes - typically low calcium, magnesium, phosphate and potassium
Low sex hormone levels (FSH, LH, oestrogen and testosterone)
Leukopenia
Raised growth hormone and cortisol levels (stress hormones)
Hypercholesterolaemia
Metabolic alkalosis, either due to vomiting or use of diuretics
Management of anorexia nervosa
If patients are very unwell the MARSIPAN checklist should be used to guide management.
Anorexia nervosa complications
positive and negative prognosis factors in anorexia nervosa
What should be asked about for PC of an eating disorder?
duration
precipitants (puberty, sudden weight loss, a switch to veganism/vegetarianism)
behaviours and frequency (restricting, binging, vomiting, exercising, laxative use, compulsions, routines)
cognitions (weight gain fear, body perception, any body parts they don’t like)
ideal weight (if you had a magic wand, highest and lowest weights in the past)
motivation for change (what’s stopping them from recovering, why do they stick with it?)
biological symptoms (libido)
also consider:
- evidence for impulsivity -> self-harm, gambling
- evidence for psychosis
- evidence for anxiety
What should be asked about for family history of an eating disorder?
family attitude to food and eating - any pressure to finish food as a child
parent’s dieting history
mother and father’s shape
family psych history
role in family and relationships
What should be asked about for personal history of an eating disorder?
shape as a child
fussy as a child
effect of puberty
schooling
peer pressure
pregnancies
are they still functioning
What should be asked about for PMH of an eating disorder?
medical admissions
complications with eating disorder e.g. osteoporosis, amenorrhoea, and infertility
WATCH OUT FOR DIABETES
What should be asked about for social history of an eating disorder?
do you like cooking (anorexics tend to love it)
do you shop for food
do you have friends or hobbies
do you eat out (anorexics tend to hate this)
What do you look for in physical examination of a patient with an eating disorder?
parotitis (from vomiting)
dry skin (reduced essential oils)
their size, dress and energy level
back of teeth
What investigations should be done for a patient with an eating disorder?
weight and height
blood tests (FBC, thyroid function, liver function) particularly interested in phosphate and potassium
ECG
bone density
Binge eating disorder presentation
Avoidant-Restrictive Food Intake Disorder (ARFID)
definition/presentation
Biological risk factors for eating disorder
Psychological risk factors of eating disorders
sociocultural risk factors of eating disorders
physiological abnormalities in anorexia nervosa
Physiological abnormalities
hypokalaemia
low FSH, LH, oestrogens and testosterone
raised cortisol and growth hormone
impaired glucose tolerance
hypercholesterolaemia
hypercarotinaemia
low T3
Anorexia features
most things low
G’s and C’s raised: growth hormone, glucose, salivary glands, cortisol, cholesterol, carotinaemia