question: It started off as a red little bump. Now it is bigger and has a white center. I drew a circle around the redness yesterday. Today I had to draw another circle because the redness is spreading. It is har around the bump and all around it. It itches and hurts. Othing is leaking out if it. It felt like an ant bite or something like that yesterday. Now bigger and hurts worse. On my right upper thigh.