I saw a thread on this topic from 2007 but it never had any clear answers so I'll try again now in 2009! :)
About 5 months ago I had a serious allergic reaction...huge itchy hives all over my body, ears swollen, lips swollen. I was put on a steroid and the doc said it probably would happen again.
To make a long story short, it's happened numerous more times, with the same reaction but often times my hands and feet are swelling as well. When I am having one of these reactions it's the most uncomfortable thing I've ever experienced.
I saw an allergist, and he did skin testing and blood testing and couldn't figure it out. He put me on Allegra which controls the symptoms some of the time. I went back to him b/c I've continually had these reactions and instead of trying to find the trigger wanted to change my meds.
I went to a new allergist and he is also at a loss. Anyone with a similar situation and something that solved it?
I have monitored foods, lotions/soaps, plants/animals, and can NOT put a finger on it.