Can you tell me how to know if you have an eating disorder?

Questions...: Are you underweight for your height, but think you are fat? Do you obsess about gaining weight ; think you are fat, although others tell you you are too thin. Have you stopped menstruating? Do you nibble at your food ; throw most of it away? If you are worried, it is probably worth consulting with a therapist who specializes in anorexia. It is hard to treat and very important to treat.