Suggest Treatment For Chronic Hives Infection

I have been breaking out with chronic hives for about four months straight now, primarily on the bck of my thighs, slightly below armpits, back of my neck, as well as my lower back and buttocks. I have gone to see an allergist and they did an allergy test to see what I am allergic to. They gave me a steroid shot that lasted for about 4 weeks, and then the hives returned. I get them everyday usually in the evening and Benedryl and it doesn t really help much anymore. I scratch uncontrollably and the areas are extremely red. It also moves to different areas of mybody, but mostly on the areas I named above. I have also broke out with the hives on my face at times, my hands, bottom of my feet etc,