Eating disorder a given year. Anorexia affects about 0.4% and bulimia affects about 1.3% of young women in a given year. Up to 4% of women have anorexia, 2% have bulimia, and 2% have binge eating disorder at some point in time. Anorexia and bulimia occur nearly ten times more often in females than males. Typically, they begin in late childhood or early adulthood. Rates of other eating disorders are not clear. Rates of eating disorders appear to be lower in less developed countries. Bulimia nervosa is a disorder characterized by binge eating and purging, as well as excessive evaluation of one's
Other specified feeding or eating disorder in the literature, as it was perceived to be uncommon compared to the other defined eating disorders. In "DSM-III-R", published in 1987, the Atypical Eating Disorder category became known as Eating Disorder Not Otherwise Specified (EDNOS). "DSM-III-R" included examples of individuals who would meet criteria for EDNOS, in part to acknowledge the increasingly recognized heterogeneity of individuals within the diagnostic category. In 1994, "DSM-IV" was published and expanded EDNOS to include six clinical presentations. These presentations included individuals who: A disadvantage of "DSM-IV"'s broad EDNOS category was that people with very different symptoms were still classified as having the same