About half of individuals with anorexia nervosa develop bulimia nervosa at some point during the…

About half of individuals with anorexia nervosa develop
bulimia nervosa at some point during the course of their illness. Given that
the disorders seem so different on the surface (anorexia nervosa characterized
by restricting and bulimia nervosa with binge eating), how can you account for
this high rate of diagnostic flux?