10/07/2025
Great description of what you may see and what can cause skin allergies in horses!
Equine Skin Allergies: What Horse Owners Should Know ✍️
What are they?
Skin allergies in horses can cause itching, hives, hair loss, and skin sores. The most common types are reactions to insect bites, environmental allergens (like pollen or dust), and, rarely, certain foods or contact with chemicals.
Common Signs:
• Excessive scratching, rubbing, or biting at the skin
• Hives (raised, bumpy areas on the skin)
• Hair loss or bald patches
• Scabs or crusty skin
What causes them?
• Insect bites: Especially from midges (“no-see-ums”), flies, or lice
• Environmental allergens: Pollens, molds, barn dust, etc.
• Contact allergies: Shampoos, sprays, bedding
• Food allergies: Rare in horses
When do they happen?
Seasonal allergies often flare up in warmer months (due to insects or pollen). Year-round itching may be due to dust, molds, or other ongoing exposures
What can you do as an owner?
• Reduce exposure to known triggers (like insects or dusty bedding)
• Work with your veterinarian to identify the cause and create a treatment plan
• Treatments may include special shampoos, medications, or allergy shots
When to call your equine veterinarian:
If your horse is uncomfortable, losing hair, or has sores that don’t heal, consult your veterinarian for diagnosis and treatment options.
