Hi, I Was Recently Tested By An Allergist And Discovered

Hi,
I was recently tested by an allergist and discovered I was allergic to many trees, weeds, and grasses. My doctor put me on Advair HFA, Azelastine nasal spray, Montelukast sodium tablets, Flonase nasal spray, and Cetirizine Hydrochloride tablets. I have started breaking out in red itchy patches on hands, head, neck, back, stomach and arms. They eventually go away but other patches pop up in different areas . I'm trying to figure out if it is one of the medications that I started taking because I didn't have this problem before. I have stopped the Advair as of yesterday but this morning the itchy red patches started again. Please advise. Thank you