i have an itchy scalp, it is MADDENING....i know it has been going on for 20 yrs I have been to the dermatologist once, he said it was SD, gave me a steroid to apply, worked for a bit but always came back. I have used ALL the prescribed shampoos, ALL the over the counter stuff, searched the internet forever, tried home remedies , you name it, I ve tried it, and still maddening itch with flaking....it s so bad my wardrobe is grey and white, it s horrible.....please, help, at times the itch is so overwhelming I feel like i cld lose my mind!