Hi,
Yes i'd agree with the others. I went to the doctor with 'urticaria' itchy skin basically, i'm on Cetirizine, it's an anti-histamine, you can buy it over the counter called Zirtek. If you're getting fed up of going to the doctors and having no joy. You take 1 pill at night and that's it. It has completely stopped my itchy skin. Give it a try. If it works for you then tell your GP to get it on prescription. Or, if you pay for your prescriptions it would be cheaper just buying it over the counter at your local chemist.
Before you do, please check with the pharmacist that the other meds you're taking won't cause any problem with the anti-histamine.
Check out this link:
http://en.wikipedia.org/wiki/Urticaria
does that look familiar?
Let us know how you get on