Eating disorders Flashcards
What is Other specified feeding or eating disorder?
*This is the diagnostic category for individuals who do not fit the criteria for AN or BN, but who have characteristics of one or both conditions (Bariatric surgery patients)
What is binge eating disorder?
Characterised by repeated overeating, no compensation, it is estimated to be present in 9-18% of obese individuals, mainly female
Probably the most common eating disorder, shares characteristics of
BN
What is night eating disorder?
(a putative diagnostic category)
*Again linked to obesity, the persons circadian rhythm is abnormal and this may be linked to leptin dysfunction
What is rumination disorder?
Repeated regurgitation & re-chewing of food (more in children, especially with Int. Dis.)
What is Avoidant/Restrictive food intake disorder?
*Like anorexia, but withoutfear of weight gain, fat or body distortions (more in children)
Inability to eat a wide range of foods, characterised by weight loss
What is child pica?
*Often associated with developmental disorders
*Can include paint, plastics, animal droppings, sand etc
What is adult pica?
*Iron deficiency (anaemia) –pagophagia (ice eating) and consumption of soil
*Psychiatric conditions
What is Prader-Willi?
Developmental disorder
*1:20,000, rare genetic condition, with compulsive overeating, many die from obesity related conditions
Disregulation of capacity to feel full (feel hungry all the time)
What eating disorders are sequelae of brain injury?
*Gourmand syndrome–MCA stroke, frontal damage
*Hyperphagia–Amygdala lesion, Kluver-Bucy syndrome
What is Klein-Levine syndrome?
(1:1000000), autoimmune triggered sleep disorder after a cold or flu, sleep for 15-20 h a
day and when wake up, are completely preoccupied with sex of eating so all they do when they’re awake is eat
What is the clinical definition of AN?
*Restriction of energy intake relative to requirements, leading to significant low body weight (as judged by BMI relative to age, gender and health expectations)
*Intense fear of gaining weight or becoming fat, or persistent behaviour that interferes with weight gain, even though at a significantly low weight
*Disturbance of perception of shape or bodyweight, undue influence of of body weight or shape on self-evaluation or denial of the seriousness of current low body weight
What are the 2 subtypes of AN?
*Restricting –dieting, fasting and exercise (often early presentation)
*Binge-eating/purging –vomit, laxatives, diuretics & enemas (often later presentation)
What is the prevalence of AN? (5)
*Lifetime prevalence of AN is 0.5-2% in women
*AN is primarily a disorder of women, with a sex ratio of between 10-20 to 1
*AN occurs in all races, cultures and classes, but is predominantly found in middle or upper middle class Caucasian women
*Higher rates of AN are observed in those participating in dance, fashion and elite sport
*AN typically appears at around 12/13 years (i.e., post menarche) with a range of around 10-60 years
What is the onset of AN? (10)
*Starts with minor changes in diet
–Desserts are abandoned, then meat, then all fat containing food
–Vegetarianism may be used to justify this transition
*Increasing focus on “safe-foods”(e.g., lettuce, fruit)
–Restriction of fluid intake
–Decreased eating speed
–Longer intervals between meals
–Progressive reduction in caloric intake
–May be well disguised from family (e.g., baggy clothes)
*Thinness starts to become the only salient goal
What are the medical consequences of AN? (8)
*Overactivity (peculiar to AN) and cold sensitivity
- Can include fidgeting, excess walking and prolonged standing
*Multiple endocrine abnormalities (e.g., Type 1 diabetes)
*Low blood pressure and slow HR
*Diminished libido and amenorrhea
*Osteoporosis (post-recovery)
*Neuropsychological impairments in learning and memory and reduction in hippocampal volume
*Anxiety and depression (estimated range 21-91%)
*Lifetime mortality 5-10% (from starvation and suicide –with a 56x greater risk for the latter, relative to norms). This makes it the most lethal of all psychiatric disorders