Small animals like rodents – so Guinea Pigs as well – will unfortunately often be diagnosed rudimentarily only because of its cheap price and much higher costs for medical treatment. Furthermore the research in Guinea Pigs and the preparedness to study cavy diseases failed often because of its costs. International specialist literature in this field is often fragmentary too.
So it is important to find and priceless to have a good veterinarian who is trained in small animals and especially Guinea Pigs! This can spend years of lifetime for your cavies. You should find a local veterinarian experienced in nursing Guinea Pigs before one of your cavies needs it.