Ok I think I have ruled out chytridiomycosis. My next thought is we may be dealing with a respiratory infection. In this exam you will need to pick the frog up, put it to your ear, and listen. Do this in a quiet room. What you don't want to hear is crackling when it breaths. Crackling indicates a respiratory infection and the animal needs to be put on antibiotics immediately if you hear it. Which means a trip to the vet.