There is over the counter treatment for it I think. Keep it covered and be sure you wash your hands good so as not to transfer it to your cat. I got it once from my daughter in laws cat who had come to spend a week with me. I had one and could not figure out where I got it, then she called and told me she had discovered her cat had ringworms to watch my cats... Lucklie, mine was on my upper leg so it was covered and my cats didn't get it. (After that, she quit taking her cats on trips with them)