My son is 9 yrs old and since his accident 3 years ago. He’s started getting these bumost that started out like mosquito or spider bites. It would be raised no redness then it disappear and turns into what appears to a ring red with bumps. Sometimes it’s a perfect circle with bumps and some aren’t so perfect. Minor itching. It usually last a few days to a week then it goes away but leaves and ugly scar. It uses to come on his legs then arms, now it appears all over sometime one at a time now it’s coming as one heals. It fits the descriptions as the ringworm look a like. My pediatrician won’t listen to me she swears it’s ring worm but no one else has gotten it the meds didn’t work and my son sleeps in his brothers bed often. I’m at my wits end it seems to be getting worse. His doctor has no desire to look for other possibilities.