A person with binge eating disorder often eats an unusually large amount of food and feels that eating is out of control. Binge eating disorder often occurs with bulimia nervosa, another eating disorder that may also involve purging.

In other cases, binging can happen without other eating disorders. For example, the person may feel upset about binging, but may not try to undo these feelings by vomiting, exercising, or taking laxatives.

It is not clear exactly what causes binge eating disorder. Since about half of people with binge eating disorder have a history of depression, it may be related to that condition. Studies also suggest that people with binge eating disorder may have other emotional problems, including low self-esteem, anger, and/or obsessive compulsive behavior.