Join Date: Nov 2012
Location: Perth, Western Australia
• Horses: 0
Ringworm isn't actually a worm, it's a fungus, so worming won't help anyway.
It doesn't look like ringworm, but it wouldn't hurt to treat everything that touches your horse with an anti-fungal spray or wash, just in case it is something along those lines.
How old is your mare? I know of an elderly gelding that started shedding his coat in patches like that. It was linked to his pituitary glands not functioning correctly. Sort of like Cushings.
If it were me, I would be getting the vet out to take scrapings, that way I would know for sure if it is a fungal/dermatological issue or something else.