EDNOS: Eating Disorder Not Otherwise Specified
Many times people struggle with eating thoughts, feelings, behaviors, but do not follow the characteristic definitions of either bulimia or anorexia. In cases in which people do not have all the symptoms of anorexia or bulimia it is said that they have an eating disorder not otherwise specified (EDNOS). Technically speaking, EDNOS is defined as a "category of disorders of eating that do not meet the criteria for any specific eating disorder". So it is like a “catch all definition" for those undefined eating disorders.
The problem with EDNOS is that a person may have an eating disorder and he/she (or his/her family) does not recognize it, delaying seeking proper medical and counseling advice. In addition, not being able to fit into specific types of eating disorder, additional problems can surface. Medical insurance will not cover their treatment.
The National Alliance on Mental Illness have some examples of EDNOS. For example, a person may engage in binge eating without looking for compensatory measures after binging. Or another one, may have many characteristics of anorexia but still not be in the target weight for diagnosing anorexia.
There are some initial attempts to classify these EDNOS. However, keep in mid that, there are variations of them. Names such as Pica, Compulsive Binge Eating, Prade-Willis syndrome, Orthorexia, Night Eating Syndrome, and Bigorexia are emerging into this poorly understood field of eating disorders.