I thought I was the only one with the "mystery itch" as I like to call it... I have narrowed mine down to a contact allergy and have been using Aveeno lotion with Menthal. This soothes the itch which reduces the hives.. My doctor put me on a relatively new allergy drug, Xyzal and that seems to help but I still have break outs. Does anyone have a diet to follow to narrow down the causes?? Good luck to all of you and hope this is some relief as I know your itch.