--Anorexia [ANA]:::  This eating disorder is characterized by a refusal to maintain body weight at or above a minimally normal weight for height and age; an intense fear of gaining weight or becoming fat, even though underweight; disturbance in the way in which one's body weight or shape is experienced, undue influence of body weight or shape on self-evaluation, or denail of the seriousness of the current low body weight;in post-menarcheal females (those who are currently able to have their periods), amenorrhea, i.e. the absence of at least three consecutive menstrual periods.

--Bulimia [MIA]:::  Bulimia is characterized by recurring episodes of binge eating (see below); recurring inappropriate responses to overeating, such as self-induced vomiting, excessive exercise, or misuse of laxatives, diuretics, enemas, or other medications; binge-purge episodes occurring at least 2 times a week for 3 months or longer; evaluating your self-worth based on your weight and body shape.

--Compulsive Over Exercising [COE]:::  People suffering from COE will exercise beyond what is necessarily or safe. In the same way that someone with BED will eat emotionally, someone with COE may exercise in order to deal with stress, anger, sadness, and other negative emotions.

--Binge Eating Disorder [BED]:::  Is the newest clinically recognized eating disorder. BED is primarily identified by repeated episodes of uncontrolled eating. The overeating or bingeing does not typically stop until the person is uncomfortably full. Unlike anorexia nervosa and bulimia nervosa, however, BED is not associated with inappropriate behaviors such as vomiting or excessive exercise to rid the body of extra food. The illness usually begins in late adolescence or in the early 20s, often coming soon after significant weight loss from dieting. Some researchers believe that BED is the most common eating disorder, affecting 15% - 50% of participants in weight control programs. In these programs, women are more likely to have BED than males. Current findings suggest that BED affects 0.7% - 4% of the general population.

--Eating Disorders Not Other Specified [ED-NOS]:::  This category is for disorders of eating that do not meet the criteria for any specific eating disorder. Examples include:
-- For women, all symptoms of Anorexia Nervosa are present except that the individual has regular periods.
-- All of the criteria for Anorexia Nervosa are met except that, despite significant weight loss, the individual's current weight is still in the normal range.
-- All of the criteria for Bulimia Nervosa are met except that the binge-eating and inappropriate compensatory behaviors occur at a frequency of less than twice a week or for a duration of less than three months.
-- The regular use of inappropriate compensatory behavior by an individual of normal body weight after eating small amounts of food (i.e. self-induced vomiting after the consumption of two cookies).
-- Repeatedly chewing and spitting out, not swallowing, large amounts of food.

Source: Cerulean Butterfly