Advice needed - Mud fever (Pic)

[Tnavas]

It wont get better as its not being left alone. I never wash legs in the winter and if I ever see mud fever I leave well alone.
It needs to be left to scab up and then the skin can repair its self.
Try that and see what it looks like in a weeks time.

Snorky some times it is self limiting but rarely is. It does need to be treated promptly to prevent it spreading and to reduce the associated pain the horse feels when it does spread and becomes infected with bacteria.

I've dealt with a good many cases - working in the racing industry we see a lot of it when horses come back from spelling. Legs so swollen the horse really doesn't want to move around.

Prevention is always better than cure - and that is to treat from within. A diet that has adequate Copper & Zinc in it will reduce the possibility of a horse getting the infection.