Bulimia Nervosa is a condition with two main features:

1. Episodes of binge eating in which a person consumes a large amount of food in a short period of time, with a feeling of loss of control while eating, followed by;

2. Compensatory behaviours used as a mechanism of weight control in response to the binge. These behaviours may include self-induced vomiting, laxative use, extreme exercise etc.

These behaviours can become compulsive and difficult to control, and can lead to obsessive thoughts about eating and body image.

More information is available from the National Eating Disorders Collaboration.