I agree with John. Sounds like a verbatim description of a bacterial infection. For future reference, you can treat with BAYTRIL. Put 8 drops in 125ml lepid water. Put a lid on the dish and make sure the frogs’ head stays above the water. Duration: 15 min. each day for 6 days. You have to get a prescription for Baytril so take it to the vet and have it diagnosed. Good luck.