Contrary to what most think, ringworm in guinea pigs is brought about by fungi and not worms (as the name suggests). Ringworm is called as such because it creates a characteristic ring-like lesion throughout the skin of an infected animal.
Ringworm infestation is a serious problem as it is highly contagious. In fact, ringworm is zoonotic, meaning it can be transmitted from an infected animal to humans, or vice versa. Factors that increase a guinea pig's susceptibility to ringworm infestation include overcrowding of guinea pigs in one housing as well as exposure to certain stressors. Young and especially senior guinea pigs are more prone to ringworm infestation. In terms of symptoms, you would notice furry cavies that have been infected by ringworm get spots in their coat that are hairless or circular. Lesions tend to start showing up in its face and spread from there.
Your trusted vet McHenry IL might need to conduct some lab tests to come up with a more conclusive diagnosis and the right treatment.
