What did I do to cause this?

So my son's skin is peeling above his area not on it but above it (its hard to explain) I didn't want to take a picture but I think it's covered enough so you can't see his parts I do put his thing down and I pat the wipe on him I don't wipe because of Rash but this is new my first born never did something like this and didn't know something like this can even happen

The white is the cream I put on it