Ds has wringworm. It is one bur very big ( 2in in diameter). We started treatment a month ago with over counter cream for 2 weeks. It did not help much. I took him to dermatologist, he did a scrape to confirm that it is indeed wringworm and prescribed econazole cream. Not much improvement is seen after 2 weeks. What are the next steps? Or is it normal for it to be hard to get rid of? I read that next step is oral medicine but I am scared of side effects. Any experience with these? Any help?