I've been having an itchy sensation and when i begin to scratch small bumps appear that turn into welts and after a while they suddenly disappear?

Dont: itch unless unavoidable. Itching leads to more itching by releasing histamine.

Hives: Hives (urticaria) are what you are describing. These occur when you are exposed to something that you are allergic or intolerant to . Try to discover what triggers this reaction in foods or products you put on your skin. If you can't figure it out,, try taking a non-sedating antihistamine and see if that helps relieve the problem. If not see your doctor or an allergist.