http://www.medications.com/effect/view/40737 Was prescribed Cephalexin in the ER after stitches. Took it 4x a day for 5 days. After completed, I developed a rash all over my body -- I have been itching for 4 days now with no relief. Tried Benadryl, Claritin, Zyrtec, Cortisone cream and Calamine lot