I had both my dogs groomed 5 weeks ago. My rough collie had been ill when I collected her from kennels the previous fortnight - very bloody diarrohea. Vet said it was a bug as it cleared up after anti-biotics. I had her fur shaved by the groomer. It is now growing back like a puppy. However, she has two large bald areas - one on each side of her, in front of her hind legs, (about 8 inches by 4 inches). The skin is a little flakey, like dandruff. She was swimmingin the sea last weekend.

My other dog is fine. Any ideas?

Tina