RINGWORM IN GUINEA PIGS AND OTHER SMALL MAMMALS
Ringworm is not actually caused by a worm, it is skin infection caused by a fungus. While lesions alone can lead to high suspicion of an infection, definitive diagnosis is made by culturing the fungus. Because the culture test can take 2-3 weeks to complete, treatment is typically started immediately in suspect cases. If the test is positive, treatment should continue and cultures should be repeated every 3-4 weeks until two consecutive cultures are negative for the fungus.