i have been having problems with my scalp for a couple of years now been to doctors many of times, i dont have lice, but crawling sesation wont go away i have tried lice and mite traeatments, everything from the health store,nothing works, black specks,the often look silver,white fluff, and knats , what ever i have seems to have wings i think their knats, i change bedding everyday,wash coats daily nothing seems to work,help please i do not know what to try next