Anorexia Nervosa: Signs and Symptoms Binge/Purge Subtype - Recurrent (once per week) episodes of binge-eating or purging, sometimes in addition to restriction • Binge eating • Purging behaviour - Self-induced vomiting, misuse of laxatives, diuretics, enemas (may occur without binge eating) • Co-morbidity with substance use disorders/impulsive traits Restrictive Subtype - Dieting, fasting, or excessive exercise, and the absence of recurrent binge-eating or purging • Fasting/food restriction • Excessive exercise • Co-morbidity with obsessive compulsive disorder/traits Significantly low body weight • Taken in context of what is expected for age, sex, height and the individuals prior weight • In children: failure to maintain expected developmental trajectory • In adults usually defined as BMI < 18.5 • Presence of physiological consequences of emaciation Associated psychological/behavioral features • Relating to Control: behavioral rigidity, inflexibility of thinking and perfectionism • Relating to Food: obsessive preoccupations, fears and rituals relating to fat, calories, nutrition, food etc. • Relating to Mood: dysphoria, social withdrawal and irritability #AnorexiaNervosa #pathophysiology #diagnosis #signs #symptoms #psychiatry
