Anorexia nervosa is an eating disorder characterized by low body weight and periods of starvation or binging and purging. The lack of adequate nutrition and fat stores can lead to amenorrhea. Patients with anorexia will feel fat even if underweight, as anorexia is an unhealthy way to cope with emotional problems. Binging and purging can lead to damage of the GI tract and epigastric discomfort. Some peculiar symptoms may also be seen: abnormal blood counts, bluish discoloration of the fingers, hair that thins, breaks or falls out, or soft downy hair covering the body.