without seeing her, it is hard to accurately diagnose. But if you are convinced it is hives, then give an antihistamine but in a low dose. So the demazin would be a better option than the pain stop.

Has her breathing changed at all or is it simply a topical (skin) issue?

It could just be a change in the weather or some dust that has caused it. We are coming into hayfever season. A lot of people also struggle as the warmer weather increases.

Sorry for poor typing and grammer (and missign words!) tonight!