Is there any way to cure the scars on my legs?

Doctors say that there is something additional in my blood which lead to attracting mosquitos. I always get most of the mosquito bites when i am out with my friends. I used to scratch the bites causing scars on my legs, and that is why i seldom go swimming as i feel uncomfortable when people look at my legs. I hope to find a cure for the scars. Is there any way to cure them? Any types of cream that can help?