Thank goodness you got some answers to the problem.
All the best to you and your little one.
Thanks a lot for the responses. We took him to his second ER visit on Sunday at AI Dupont/Nemours, a very good Children's hospital in Wilmington DE and they diagnosed him with Lymes disease from a hand bite (the deer tick did not attach at all) and checked for bacterial meningitis, but that was thankfully negative. So we have a month of antibiotics to do and then further checks with a childrens Lymes specialist located via ILADS online directory. A blood test confirmed the Lymes diagnosis yesterday.
Sounds like the child should be hospitalized and ID (Infectious Disease) consulted.
You can also post in the Pediatric and Infectious Diseases Communities.
From what I gather with the information you have provided, it sounds like your boy had or/ has an infection and should be seen by a specialist right away. I would not take any chances with this. I would try a dermatologist that specializes in rashes and such and if that gets you no where then get another opinion, even if it means traveling to another location or hospital. I know that ring worm will appear as a red ring around the skin area and give a slight fever in most cases. Especially if he has been around pets, they could have spread it to him by a bite. Like I said, I have a 3 yr old little girl whom has had many medical issues and if I were in that predicament, I wouldn't take 'no' for an answer.
Best of luck to you & your family...