In many cases, the symptoms of an eating disorder do not fit perfectly into one category. For instance, individuals with anorexia nervosa may sometimes exhibit purging behavior as well. Similarly, people with bulimia nervosa may indulge in strenuous exercises to control their weight. The important thing to remember is that symptoms associated with eating disorders usually manifest as emotional issues. So if someone struggles with eating, self-esteem, and body image, they must receive help.