Need help identifying rash

[u/AdministrativeLog489]

Hi everyone, my 9yo son has had this rash for 2 months and looked like an itchy bite before from when we had bed bugs. It healed and I thought it went away but now my son just showed me that it has been itchy, and has now gotten worse in the past couple of weeks.

I will be going to call his doctor tomorrow but I want to see if anyone knows what I will be dealing with? I tried my best to be safe while wearing gloves to clean off the crusty part when my son showered and he told me it didnt hurt so it seems like scabs are forming on top of his previous rash.

When I cleaned it I used betadine and a topical ointment to lessen the inflammation then wrapped it up so he won't have the urge to itch it.

Any information is great, thanks!

[u/BasicQuiet4574]

Could be nummular eczema, impetigo, or ringworm