[scoobiedooiscoo]

my friend who has laceys sister winnie took her dog to the vet today we thought she may have ring worms, she has a bald spot on top of her head a little bigger then an eraser but when she took her to the vet she said nothing showed up under the woods black light and also took samples of her hair to test ( that will take 5 days) but she did tell her that some dogs when they have top knots in can get damaged or rotten hair folliculus. is this true?
winnie doesnt even have her hair up nearly as often as lacey and never tight. is this something i should worry about cause i always have laceys hair up.