"In a large study of psychiatric outpatients, their eating disorders were mainly classed as "not otherwise specified" (NOS) — rather than as bulimia, anorexia, or binge eating — and most patients failed to meet the full diagnostic criteria set forth in the Diagnostic and Statistical Manual of Mental Disorders, 4th Edition ( DSM-IV). This suggests that DSM-IV diagnostic thresholds for eating disorders are too restrictive, the researchers, led by Mark Zimmerman, MD, from Brown University School of Medicine, in Providence, Rhode Island, write. Dr. Zimmerman told Medscape that their findings "strongly suggest that there are problems with the diagnostic criteria in the DSM category for eating disorders, because most individuals with an eating disorder don't meet the formal diagnostic criteria." He added that this contrasts with other categories of diagnosis — such as anxiety, personality, and depressive disorders — where "the overwhelming majority" of individuals meet the formal diagnostic criteria. "The conclusion is that there are significant problems with the eating-disorder diagnostic category in the DSM," he said."