These sound like hives. You need to see an allergist to see what you are allergic to. You can also hav autoimmune hives. I've had them before for six months (I'm not kidding). I currently have them. There are lots of things that can trigger them. For me, this time, I think it is from a minor surgery over two months ago. The itching can be controlled with antihistamines like Claritin, Allegra, benadryl, atarax. If you are breast feeding, you need to see which ones are ok to take. You can also try over the counter lotions like Allegra cream or Benadryl cream. I currently take 3-4 antihistamines and prednisone.