When you have ringworm it tends to itch or burn but with Lymes disease, if your already showing round spots, you have probablly already experienced sore joints and felt weaker. Also Lymes Disease rings dont spread as rapiddly as ringworm. Lymes Disease can also have what is called a bulls eye, a circle with a dot inside of it. Although the best thing to do is consult a doctor.

I have never heard of Lymes disease having spreadable circles. It usually only presents as a dark circle with a lighter area in the middle resembling a bullseye. Some mistake it for a bruise. You can get multiple light colored circles with ringworm as the parasite spreads.