Companion Animals

Mud Fever in Horses: Welfare and Seasonal Management

Welfare guide to equine pastern dermatitis (mud fever) -- a painful seasonal skin condition common in UK winters.

Key Facts

Mud fever (pastern dermatitis) is caused by Dermatophilus congolensis and other organisms in wet muddy conditions
It causes painful crusting and swelling of the lower limbs, particularly pasterns and heels
White-legged horses and horses with feathers are most susceptible due to skin type and reduced drainage
Clinical signs include lameness, pain on palpation, matted hair and weeping lesions
Secondary infections including cellulitis can develop -- causing severe pain and lameness
Treatment involves removing scabs, drying the area, and applying topical antibacterial preparations
Prevention centres on minimising mud exposure, not over-washing legs, and allowing skin to dry before rugging
Severe cases require systemic antibiotics and veterinary management

Welfare Significance

Mud fever causes genuine pain -- affected horses may be significantly lame and show strong pain responses to leg handling. The condition is self-perpetuating in wet conditions and can rapidly progress from mild skin soreness to severe cellulitis. Prevention through management of turnout and stable conditions is far more welfare-effective than treatment.

What You Can Do

Rotate paddocks to prevent mud accumulation in high-traffic areas
Apply barrier creams or turn-out boots to protect vulnerable lower limbs
Allow legs to dry naturally before applying rugs or boots -- do not over-wash
Seek veterinary treatment promptly if lameness or swelling develops