Iam and have been taking Apo-Cephalex 500mg for some time now. I started in july of 2013 - after i broke out in blister like hives and they were so itchy and hurt! what is weird is I broke out mainly all over my face and buttox area and odd places all over my body. i did every type a test they do even Lupis, i have been to 5 different doctors and 2 specialists, they have no idea??? now Im stuck with scars of brown dots all over my body, and taking these pills. I had a strong immune system b4 i started on these pills and now i find i have very bad head aches and I get sick very easy. B4 starting these pills i would -maybe- get sick once a year???? Help me figure this out please :) LEE