Reaction to one or more of new medications

Patient: I’m taking doxycycline monohydrate 100 mg 1×2 dayly andPredison 10 mg – on second day of treatmentSymbicort 80/4.5aresolI have developed a rash. What medicine should I stop?Dr office closed for day

Symptoms: Rash on legs chest back. Not severe. Slight itching