Talk to Dermatologist on Skin Desease

Salam Dear Doctors. Sir, mere head me (Fungus Desease) Jo bahut arse se tik nahi ho rahi, jis ki waja se mere sir me Khushki bahut ziyada hoti he our harish karte karte khoon mere nahoon pans jati he. Sir Jab (Ketakonazole) shampoo se jab dhota ho to tik rehta he our jab os se nahi dhota to dobara ye masla repeat ? hota he.....plz kuch medicine ?? ya koi Idea .....thanks