Mud fever, also known as pastern dermatitis, is a common skin condition in horses that occurs when the skin on the lower legs becomes inflamed and infected. It is typically caused by wet and muddy conditions, and is more common in horses with white or light-colored legs. While seeking treatment from a veterinarian is important, there are also some natural remedies that can help to soothe and heal the skin.

1. Apple cider vinegar: This natural remedy has antibacterial and anti-inflammatory properties that can help to reduce swelling and promote healing. Mix equal parts water and apple cider vinegar and apply to the affected area using a spray bottle or sponge.
2. Honey: Honey has natural antibacterial and anti-inflammatory properties that can help to soothe the skin and promote healing. Simply apply a thin layer of honey to the affected area.
3. Tea tree oil: This essential oil has natural antifungal and antibacterial properties that can help to prevent infection and promote healing. Dilute a few drops of tea tree oil with a carrier oil and apply to the affected area.

While natural remedies can be helpful, it’s important to seek treatment from a veterinarian if your horse is suffering from mud fever. They can provide a proper diagnosis and recommend the most appropriate treatment plan.