Hello, I started having a small rash on my face about 3 weeks ago. The doctor gave me some cream for a rash. A week later it got slightly bigger and they did a scrapping and determined I had some fungus in it. They prescribed me ketoconazole. I have used it for 4 days and the spot has doubled in sized and is now extremely itchy. It looks clearly like a ringworm but the cream seems to be making it worse. My skin is cracked and red now. Should I switch to something like lotrimin?