I Have A Rash And Swelling On My Face Only.

I have a rash and swelling on my face only. it sort of itches ... not like a bug bite itch, but it hurts I have not ate or drank anything new. I have sensitivies to orders, but was at home when it started no cleaning had been done I checked with my DR and she really didn't have any answers ...she said that it is not shingles since it is on both sides of my face. have you any ideas?