Ringworm is a cousin to athlete's foot fungus and we typically see more of it at the hospital in warm humid weather (we've had several cases this week already).

There used to be a pill that helped heal the skin from the inside out but the manufacturer quit making it (probably because it worked and they didn't sell as much).

I'm curious, what tests did your vet run that took several days to get results? At our hospital we typically do skin scrapings (results read in minutes) or use a Wood's light (a black light that floresces if ringworm is present). Just curious how other hospitals do things, no slam on your vet intended.