I had a bad reaction to a medication once that caused my skin to peel like a bad sunburn................
Anything with Pseudoephedrine (which is in just about every cold currently on the shelves) makes all my skin peel off and also makes me feel under the weather. Who knows what it does to my insides? I have a few other funky allergies as well. Prednisone caused me to go legally blind for about a month after I had a bad reaction to poison oak. I take as little medication as possible.