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Psych 257 Chap 8 Psych 257 Psychopathology Barlow et Al: Abnormal Psychology 2nd CDN edition Chapter 8

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University of Waterloo
Uzma Rehman

Eating and Sleep Disorders Eating Disorders an overview bulimia nervosa outofcontrol eating binges followed by selfinduced vomiting laxatives purging anorexia nervosa eat nothing beyond minimal amounts of food chief characteristic allencompassing drive to be thin high death rate due to disorder suicide increase in rate of disorders is culturally specific eg US Canada strongest cause is sociocultural Bulimia Nervosa most common psych disorder in university Clinical Description eating large amounts of food more than normal usu junk food out of control eating compensate with purging techniques vomit laxative diuretics excessive exercisefasting purging type vomitlaxative etc usu younger comorbidity w depression non purging exercise etc medical consequences salivary gland enlargement due to repeated vomitingchubby face eroded dental enamel upset chemical balance of bodily fluid eg electrolye imbalancecardiac arrhythmia renal failure intestinal problem assocd psych disorders bulimics usu present w anxiety mood disorders eg 75 had anxiety disorder related to other behaviours suggesting poor impulse control smoking alcoholism drug use bulimia 10 wn normal weight usu secretive of bulimic symptoms ashamed of lack of control Anorexia Nervosa morbid fear of gaining weight dangerously low weight level proud of control over eatingClinical Description bulimia nervosa more common than anorexia but overlap bulemics have history of anorexia anorexia fear obesity pursue thinness overreport own body weight severe caloric restrictionexercise anorexia restricting type diet to limit caloric intake bingeeatingpurging type rely on purging never satisfied with weight disturbed body image seldom seek own treatment medical consequences eg amenorrhea cessation of menstruation controversial criterion in DSMIV dry skin brittle hairnails sensitive to cold temperature cardiovascular problems associated psych disorders anxietymood disorders OCD frequently cooccurs substance abuse BingeEating Disorder distress due to binge eating wo extreme compensatory behaviours 20 of obese people in weight loss program 50 of obese candidates for bariatric surgery either binge first before dieting more serioususu more disorders or diet then binge BED may binge to alleviate anxious mood show increased stress negative affect weight concerns Statistics majority is women white uppermiddle class males usu homosexualbisexual orientation age of onset 1619 yrs prevalence 11 females 01 males for bulimia nervosa anorexia female onset usu adolescence 13 yrs 16 lifetime prevalence crosscultural considerations development in immigrants who move to western countries prevalence lower in backasian NA females frequent among aboriginals cultural diff eg china slightly plumpsign of value japan fear of overweight lower than NA found body image concerns worse in NA than india same in thinness drive body dissatisfaction development considerations anorexiabulimia strongly related to development diff patterns of physical development in girlsboys interact w cultural influencesdisorders Causes other factors biopsych do contribute but mostly socialcultural factorsdev Of eating disorder
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