The person is not able to keep their weight at or above the normal range for their age and height. This is due to restricted food intake. People with anorexia nervosa may also binge and purge.
Avoidant Restrictive Food Intake Disorder (ARFID)
The person places extreme limits on what types and amounts of food they eat. But they don’t have the body image concerns seen in people with anorexia. For some, this is due to longstanding selective or picky eating. For others, it is due to a fear of some physical problem (like fear of choking or belly pain). ARFID can lead to malnutrition. This will limit a child’s ability to grow and develop how they should.
Binge Eating Disorder
The person eats much more food in a short period of time than most people would eat. This happens again and again. They feel like they lack control when this happens. Someone with binge eating disorder may eat even when he or she is not hungry.
The person has cycles of overeating followed by doing things to prevent weight gain. The person with bulimia nervosa may vomit, use laxatives or diuretics, or over exercise.
Eating Disorders Not Otherwise Specified (EDNOS)
This term is used for people who:
- Have disordered eating behaviors
- Are unhappy with their body weight or shape
- May have harmful weight-control behaviors that do not meet the full criteria for anorexia or bulimia
This is also called other specified feeding or eating disorder (OSFED).
Female Athlete Triad (Relative Energy Deficiency in Sport)
This can occur when an athlete is in negative energy balance. Weight loss is not always seen. Body changes that are not healthy (such as menstrual cycles stopping) occur. This is due to the athlete not eating enough to support the body’s needs.
The person is obsessed with proper or healthy eating. But they are not concerned about weight or body shape. Orthorexia is not yet a formal diagnosis. This type of rigid eating can be a symptom of some other mental health condition (such as obsessive-compulsive disorder).