My baby is 9 yrs old. About 2 months ago he started getting a rash on his back. A week later I took him to the vet thinking it might be ringworm. It came back negative and they put him on antibiotics and I would give him a quarter of a benadryl. It looked like it was trying to get better but then it started getting worse. So I took him back to the vet and same thing! They gave him antibiotics a shampoo and a cream but couldn't tell me really what was wrong with him. This is how it looks now and I'm freaking out. Can anyone please help me? And I'm new at forums so please bare with me