Hello, I have been prescribed 30mg a day of Prednisone for 5 days, along with Cetirizine 20mg a day, and Hydroxyzine in the evening, for Cholinergic Urticaria. things have been really bad the past couple of weeks. will the prescribed dosage of the prednisone and antihistamines together have side effects, even for just 5 days on Prednisone?