Advair HFA and chronic hives

My daughter has been diagnosed with Asthma since she was very young. Her symptoms always worsened during the winter, with viruses and such. A few years ago she was put on Advair as a controller, along with Singulair. She developed hives that same winter. I laugh now to think of it, out of pure irritation. She has been battling chronic hives every winter since. Winter is the only time she is on her asthma controller as well. No doctor has been able to give us a reason for the hives and says we may never know why. I have been doing my research and discovered hives are a side effect of Advair- Why on earth didn't one of the many doctors at U of MN or Mayo catch this???? Not to mention the initial doctor that put her on the Advair and saw her for the hives at the start of this catastrophe??? Her hives were so severe her eyes were swollen shut and her lips swelled. Needless to say, she will not be taking this medication again!