Put Urticaria into your search Engine, we call it Hives here, there is a lot of information there also pictures so you can compare, if it is Urticaria it is often something you are allergic to, they give you
anti histimines for the itch but that doesnt get rid of it, very often it has to run its course, unless you can figure out what triggered it, sometimes differant foods and Shower gels, and Laundry washing liquids.