Chemical burn?

serinity • 👦🏼👦🏼👧🏼👧🏼👶🏻TTC I’m a mechanic and proud of it

So we have been potty training she's like 90% potty trained but still needs a diaper for car rides and sometimes at night. Is this a allergic reaction all the sudden to the diapers? Same ones she was wearing. Or is it a chemical burn?