One of my ewes rubbed her throat on a gate until it caused an open wound. I treated it and she appeared to get better but has now started to scratch the same spot on her throat with her back feet. She has now scratched it until the skin is broken.
I have had a good look and there appears to be no underlying cause. I have treated it with anti septic and a sulphur ointment but every time I stop treating she starts again.
It is only the one spot that she scratches.
Any ideas what it might be or how to treat/prevent the problem?