I started cycling about 5 years ago, 2 years ago I started taking lipitor and now after I go out for a ride I come back with hives on my shoulders, arms, chest and back. I thought it was alergen related at first but today it was 24 degrees out and they still showed up. I also take advair but that has been used for years and I never experiensed hives even when playing soccer on fresh cut grass.