My brother has had this red rash on the top of his foot for a while. We thought it was a rash at first so he treated it with anti biototic ointment. Recently its become even more red and puss is starting to come out of it. It may be raised but its a little bigger than this size of a half dollar.
Hi, I can understand your concern for Red rash on the top of foot. There can be multiple possibilities of the lump, and it requires a close physical examination to diagnose the exact entity of the problem. In my view correlating with the facts you have provided it appears to be either an allergic dermatitis rash or a simple bacterial infection. I suggest you to meet a dermatologist to for proper antibiotic therapy. In between you should wash the area properly and apply an antibiotic cream such as mupirocin or funding. Your brother can take an antihistamine such as loratadine for once a day if itching is present. All the best