Once I came back to Buffalo to school and had taken my first allergy shot, my asthma flared up majorly, so my doctor put me on 10mg prednisone for 8 days, while at the same time putting me on Symbicort (and also at the same time, I have been taking 75mg Doxycycline for my skin issue), and it caused me to get thrush, even though I was rinsing my mouth after symbicort. I was given the impression by the P.A. I saw that taking Prednisone increases your chances of getting thrush. Has anybody else ever experienced this?