"Dear Dr. Dennis,
When I think of eating disorders, I think of not eating enough. If my definition is correct then I most definitely do not have an eating disorder. I think I may have the exact opposite -- is there a name for this?"
Yes. The most common form of eating disorder is an eating disorder "not otherwise specified" (this includes things like binge eating disorder and compulsive overeating). It is very common for people to have the As, Bs, and Cs of the eating disorders at various points in their lives (anorexia, bulimia, and compulsive overeating). And the good news is that there is help available by eating disorder professionals who specialize in treating those who overeat. There is also 12-step recovery support in OA for people with eating disorders.