EDNOS is described in the DSM-IV-TR as a "category of disorders of eating that do not meet the criteria for any specific eating disorder".
Characteristics
This category is frequently used for people who meet some, but not all, of the diagnostic criteria for anorexia nervosa or bulimia nervosa. For example, a person who shows almost all of the symptoms of anorexia nervosa, but who still has a normal menstrual cycle and/or body mass index, can be diagnosed with EDNOS. A sufferer may experience episodes of binging and purging, but may not do so frequently enough to warrant a diagnosis of bulimia nervosa. A person may also engage in binging episodes without the use of inappropriate compensatory behaviors; this is referred to as binge eating disorder. It still is, however, a very real disorder.
People diagnosed with EDNOS may frequently switch between different eating patterns, or may with time fit all diagnostic criteria for anorexia or bulimia.
People who eat a normal amount of food, but become exceedingly obsessed with healthy eating, or strictly categorize normal foods or entire food groups as "safe" and "off-limits", may be referred to as having orthorexia. However, this diagnosis is not formally accepted by the psychiatric community.
Different forms
"Chew and spit" refers to chewing food followed by spitting it out, done with the intention of sating hunger by giving a chewing sensation without swallowing the food, thus avoiding the calories.
EDNOS are usually in the normal weight range but have 'issues with food' they eat and fast/purge but do not have the serious critiques of a anorexic or bulimic sufferer.
They usually can hide the ED, as their weight range is normal. They do, in fact, do a large amount of exercise e.g. hundreds of sit-ups, and some suffer from OCD.
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