Anorexia nervosa is a serious mental illness with marked morbidity and mortality. Twin studies on anorexia nervosa concluded that there was a higher concordance rate in monozygotic twins (56%) than in dizygotic twins (7%). Monozygotic twins diagnosed with anorexia nervosa had a delay separation-individuation process and this led to face difficulties in their daily life. In this case report, we present a pair of monozygotic twin females which have an overly close relationship, competitiveness, and perfectionism, as well as stressful family dynamics.
Key words: anorexia nervosa, separation-individuation, monozygotic twin, scale, female, family dynamic
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