Ringworm
Although its name suggests otherwise, ringworm is in fact a fungal infection. It is important to remember that this is highly contagious – even to humans! Pets that are stressed, overcrowded, very old or young are often prone to catching ringworm.
Guinea pigs with ringworm will have circular, hairless, sore spots. These usually start on their face, but can spread down their body. Ringworm can be confused with mange. Your vet will be able to diagnose ringworm by either a lab test or with an ultraviolet light. He can then advise you on the best treatment. This will include thorough cleaning of their hutch and run.
Ringworm flourishes in damp conditions, so to avoid pets catching the infection keep their living quarters as clean and dry as possible.
