I don't know because I get the same thing. People feel the need to tell me something I already know. It started around the age of twelve for me, and it hasn't ended yet. When I was younger I kept hoping once I was older it would go away. It still hasn't, adults are just as brutal as the kids were. Other girls feel the need to point it out to me more than men do. Men do it too, but not as much as women do. I find for the most part men are politer to me. I don't get it. People try to say it's because the people have low self-esteem, but I don't know if I believe that. I have low self-esteem and I don't make fun of people.
It's not about attractiveness or anything. It's just that you seem really pale and almost as though you're ill. Do you eat healthy and exersice? Do you sleep enough? You have obvious dark circles underneath your eyes, which also make you look unhealthy. And you seem almost too skinny. It's the fact that you look unhealthy that catches their eyes. All you have to do is eat well, sleep well, and exersice :) If that's not the case, than I don't know.