I have rash on stomach. It started with what looked like a pimple, then a few days later a rash about the size of quarter formed around it. In the last week but the rash has grown to about the size of a baseball. There is a clear area of skin about 1/4" between rash and red dot in middle.
Hello, I read carefully your query and understand your concern. The symptoms seem to be related to ringworm which is a fungal infection. I suggest using antifungal cream for local application such as Clotrimazole cream. I also suggest using Rifleman for three days. Hope my answer was helpful. If you have further queries feel free to contact me again. Kind regards!  Chat Doctor.