Bulimia Nervosa is a psychiatric eating disorder characterized by an excessive preoccupation with the control of body weight, leading to a pattern of recurrent binge eating, followed by feelings of guilt, depression, and self condemnation, leading to purging behaviors. BN can be classified into two types: Purging type of bulimics resort to self-induced vomiting, or use of laxatives, diuretics, and enemas to compensate for the binges, whereas non-purging bulimics resort to excessive exercising and/or fasting to prevent weight gain. This disorder shares many psychological features with anorexia nervosa (AN). In fact, some patients show history of an earlier episode of AN. Psychological symptoms of BN include constant dieting interspersed with recurrent episodes of binge eating, eating until the point of discomfort, self-induced vomiting, depression, and anxiety. Physical symptoms include abnormal bowel functioning, bloating, dehydration, fatigue, dry skin, amenorrhea, and others.
Treatment involves frequent monitoring of the patient's condition, vital signs, and hydration level. A form of talk therapy, called cognitive behavior therapy has been found to be most useful in the treatment of this condition. Medications administered include antidepressants. Severe cases may require hospitalization.