"Shipment and improper husbandry which may include deficiencies in water quality, humidity, temperature, population, cage furnishings (i.g. hiding cover) and nutrition, are two common stressors documented in outbreaks of bacterial disease." quote from Amphibian medicine and captive husbandry

Pls see below link for the cure method!

http://www.frogforum.net/tree-frogs/...-nose-huh.html