eating disorders and impulse control disorders

Anorexia nervosa (AN): an eating disorder characterized by an in ability to maintain normal weight, an intense fear of gaining weight, and distorted body perception. Clinicians diagnose an individual with anorexia nervosa when he or she shows three basic types of symptoms: severely restricted eating, which leads the person to have an abnormally low body weight, intense and unrealistic fear of getting fat or gaining weight, and disturbed self-perception of body shape or weight. In other words people with this eating disorder restrict their food intake, become preoccupied with gaining weight, and feel that they are already overweight even though they may be seriously underweight.
Binge eating: the ingestion of large amounts of food during a short period of time, even after reaching a point of feeling full, and a lack of control over what or how much is eaten. People with the eating disorder bulimia nervosa engage in binge eating.
Bulimia nervosa: an eating disorder involving alternation between the extremes of eating large amounts of food in a short time, and then compensating for the added calories either by vomiting or other extreme actions to avoid gaining weight. In addition to engaging in these behaviors, they base their self-evaluation on how much they weigh and their body’s shape.
Eating disorder: diagnosis for people who experience extreme disturbances in their everyday diet along with possible distress or concern about their body weight.
Impulse-control disorders: psychological disorders in which people repeatedly engage in behaviors that are potentially harmful, feeling unable to stop themselves and experiencing a sense of desperation if their attempts carry out the behaviors are thwarted. Before they act on their impulses, these individuals experience tension and anxiety that they can relieve only by following through on their impulses. After acting on their impulses they experience a sense of pleasure or gratification, although later they may