Hello,
From what you have written, I am guessing it to be ringworm, or the likes of it. Although, I do require more information in terms other symptoms -if there is itching? what are the aggravating factors? any discharge?
In any case you can try the following-
You can use turmeric+coconut oil+
Vitamin E oil/Olive oil mixture, as many times a day as possible.
Try not to use "hot" water for shower. Go for tepid water, and you can even use ice packs before hitting the bed.
Make sure you are not constipated. If you are, maintain your water intake to 1 liter per every 20 kg of body weight and eat fibrous diet.
Avoid wearing tight clothes around the affected areas. Go loose and less harsh garments like cottons.
No matter how intensely you feel to, DO NOT succumb to itching, it will only further aggravate it.
Try the above said and you are sure to feel the difference in a day or two.
Hope this was helpful.
Warm regards
Dr. Rashmi