I thought it might just be an allergic reaction to
Macrobid and did what I normally do when I have an allergic
reaction, take a prednisone prescription (pill form). The rash healed on my crotch, but I still get mild hives on my chest, neck, face, hands/arms, hips, and legs. (I probably get no more than 30 hives/day, mostly on my chest, hands and arms.) I also am taking Zyrtec and have been taking this for a week. I was taking benadryl originally for the itching.