Eating disorders are characterized by abnormal eating behaviors and beliefs about eating, weight, and body shape. The two formal diagnoses are anorexia nervosa and bulimia nervosa. In addition, there are many cases of abnormal eating that have only some of the features required for an eating disorder diagnosis; these cases are classified as eating disorders not otherwise specified. Another eating disorder diagnosis has been proposed, termed binge eating disorder. Obesity is classified as a general medical condition and not as an eating disorder (a psychiatric condition) because it is not consistently associated with psychological or behavioral problems.