Anorexia nervosa is an disorder of eating characterized by immoderate food restriction and irrational fear of gaining weight, as well as a distorted body self-perception. It typically involves excessive weight loss and usually occurs more in females. Because of the fear of gaining weight, people with this disorder restrict the amount of food they consume. Outside of medical literature, the terms anorexia nervosa and anorexia are often used interchangeably; however, anorexia is simply a medical term for lack of appetite, and people with anorexia nervosa do not, in fact, lose their appetites. Patients with anorexia nervosa may experience dizziness, headaches, drowsiness and a lack of energy. Anorexia nervosa is characterized by low body weight, inappropriate eating habits, obsession with having a thin figure, and the fear of gaining weight. It is often coupled with a distorted self image, which may be maintained by various thinking and feeling disturbance that alter how the affected individual evaluates and thinks about her or his body, food and eating. People with anorexia often view themselves as "too fat" even if they are already underweight. Anorexia nervosa most often has its onset in adolescence and is more prevalent among adolescent females. Homeopathy understand the individual distorted thinking and feeling process and help to change the perception about eating and food with suitable homoeopathic remedies which covers the totality of characteristic symptoms.