Some of you have mentioned the mites migrating and a "chicken skin" neck area. Is this temporary and if so, how long does it last? I have the scalp problems and started using a sulphur tea tree oil shampoo that I mix myself. Prior to this, my neck would have some itching and bumps sporadically. Since using the sulphur shampoo, my scalp has improved, but my neck has become like chicken skin, red and itchy constantly. My neck looks about 20 years older than my face! How long does it take to get to the point of a maintenance level of treatment? Have these things migrated to my neck and how long will this red,itchy chicken skin,old neck look last?