I dont eveyone who thinks they have ec, has ec. There are many different infections that causes the skin to be inflamed & crust over in different colors. Like impetigo or mrsa for instance. Your job is to find the cause of the inflammation & destroy it, because if the cause doesnt go away neither will the inflammation.
And for the people that thinks its do to trauma, the area shouldnt take years for the inflammation to subside. Most likely there is some type of problem in the body that needs to be resolved.