Dermatology Questions? Ask an Online Dermatologist.
This is Dr. David
your rash could be bacterial but this is less likely
you would need a skin culture to check for skin bacterial infection
can you upload a photo of the rash so I can better see the skin?
keep using the benadryl topcial spray if it really helps
if that helps, then most likely the rash is due to allergy and not infection.
let me know if you have questions.