I am 35 years old and I was put on Methylpred 4 mg for an allergi...

I am 35 years old and I was put on Methylpred 4 mg for an allergic reaction to Sulfamethoxazole (septra). I broke out in bad red spots from head to toe. My doctor prescribed this medication for the reaction. I took the last of my 2nd day pills. Two hours later I woke from bed with a painful burn in the bottom of my feet and palms of my hands. It then went to my legs which I took a luke warm shower to see if that would help. I then continued to ad aveeno cream an didn't work, it then started to go through my body in 10-15 minute intervals in different parts of my body. Now when I itch it feels like I'm burning. I can't eat anything cause I have the taste of this pill in my system. This is the only side effect that I have been having with this medication. I noticed today the 3rd day of my pills that the red spots are starting to get lighter. I will never take this pill ever again.