How Can A Bruise On The Leg Be Treated?

Good after noon, I suffered an injury about a year and a half ago in a job where a house burned down, the house was known to be full of mold and was hot for asbestos, I got scrapped on both legs right below the kneecap, I cleaned the wounds and put peroxide and alcohol, but a month later the itchy became intolerable to the point where the scratching was more and more, now a year and a half later, i have open cuts that have been there for over 6 months, the itchiness is getting worst and its now moving all over my body. i have pics of my leg right now, it looks really nasty, is there anything that you suggest or might be able to tell me. in advance thank you.