I've had this nearly 3 weeks now, it's a small red roundish patch which is dry around it too, sometimes it looks a bit brownish in colour too, I've tried Hydrocprtosone 1% for nearly 2 weeks now, and it hasn't even slightly healed!
I'm probably worried about nothing but as a young dad I would rather be safe that sorry!!
You could always ask the pharmacist for advice.
Have you been to see your GP? The first thing that came to my mind, was ringworm but you need to ask a Pharmacist, as ptolemy suugests or your GP.
https://patient.info/doctor/dermatophytosis-tinea-infections
You could have a look at this page
How do I post a picture may be a little easier to understand and recognise the problem then?
I had a small flakey patch on the back of my hand and it was basal cell cancer.
It was removed with all the margins clear but it required about 30 or so stitches because the skin is so thin there and they had to do a skin flap to cover the area of skin that had to be removed. No scar at all now but I used a plastic surgeon to remove it. There is also a cream that is like a mini skin chemo that you can apply if the cancer is detected early while it is small. It is called 5-Fluorouracil (5-FU) and takes about 6 weeks. Google it and you can read all about it. Hope it all works out for you.