The core concept represents a condition characterized by an abnormally low body weight, an intense fear of gaining weight, and a distorted perception of body weight or shape. Individuals experiencing this often place undue importance on their weight and shape in their self-evaluation. This can lead to severe restriction of food intake, excessive exercise, or misuse of laxatives, diuretics, or enemas to control weight. As an example, a young person might drastically reduce their calorie consumption despite being significantly underweight, driven by an overwhelming fear of becoming overweight.
Understanding this condition is critical because it carries significant physical and psychological health risks. The severe malnutrition associated with it can lead to organ damage, bone loss, and even death. Psychologically, individuals may experience depression, anxiety, and social isolation. Historically, the understanding and treatment of this condition have evolved significantly. Early approaches focused on forced feeding, while contemporary treatments emphasize a combination of psychological therapy, nutritional counseling, and, in some cases, medication. Early identification and intervention are key to improving outcomes and preventing long-term complications.