I am suffering from itching issues on hand nd leg now at neck .wherever itching happens the skin become darker than the rest of body .itching sometime becomes uncontrollable. Have tried too many medication .few doctor told its mela derma toxic ,few xerolysis nd few of them its because of thyroid .now the thyroid is too balance still itching is there nd creating dark patches. Kindly guide me how to come out of this itching issues nd dark patches as it is increasing day by day xyzal ,atarax ,itching relieve creams etc are of no use .For what kind of medication and where should I go for getting rid of all these itching nd its related issue as I am suffering from last 5 years and visited 5-6 doctors. Kindly guide.