Eating Disorder Problem : Anorexia Nervosa

          Anorexia nervosa is a psychiatric diagnosis that describes an eating disorder characterized by low body weight and body image distortion with an obsessive fear of gaining weight. “Anorexia nervosa” is frequently shortened to “anorexia” in both the popular media and scientific literature. This is technically incorrect, as strictly speaking “anorexia” refers to the medical symptom of reduced appetite.
The cause of anorexia nervosa is unknown, although it is likely that both inherent biological factors and factors in the patient’s social environment play a part. The disease is mainly encountered in the western world and is more common among women in certain professions, such as models and ballet dancers. Puberty, deaths in the family and other life stresses are all believed to be potential triggers of anorexia.
Here symtomp of anorexia :

• Weight Loss of at least 15 per cent below the normal ideal body weight for a person of the same age and height.
• Cessation of periods or delayed development in puberty.
• Self-induced Weight Loss. Methods can include fasting, low food intake, excessive exercise, diuretic medicines (medicines that make you urinate more) laxatives, diet pills or vomiting. Sometimes people make themselves sick to lose weight. Others take excessive exercise.
• Sufferers have a constant fear of gaining weight, as well as a feeling of being fat, even when their weight is much less than that of other people of the same height.
• Sufferers may feel bloated, even after a small meal.
• They may lose interest in socialising with friends.
• Other side effects include tiredness, feeling cold, constipation and stomachache.
• Some patients also develop additional disorders such as bulimia.

Source: http://www.netdoctor.co.uk/diseases/facts/anorexianervosa.htm,http://en.wikipedia.org/wiki/Anorexia_nervosa