Just like any animal, horses can suffer from different health problems. A lesser-known issue is photosensitivity, a condition where a horse’s skin becomes overly sensitive to sunlight, leading to sunburn, rashes, or even liver damage. Understanding and preventing photosensitivity is crucial, here in Sweden there is certain plants that can exacerbate the problem.
Why Do Horses Develop Photosensitivity?
Photosensitivity in horses is typically a secondary condition caused by the ingestion of certain toxic plants. These plants contain substances that, once ingested, enter the horse’s bloodstream and react with sunlight. This reaction releases energy that can damage skin cells, leading to painful lesions or blisters.
Toxic Plants to Avoid
Alsike Clover: Causes increased photosensitivity and can cause skin damage, especially in areas with little pigmentation.
St. John’s Wort: Increases sensitivity to sunlight and can lead to skin problems in horses with light-colored coats.
Lupines: Can cause liver damage and photosensitivity, especially if affected by mold.
Bog Asphodel: Can cause liver damage and increased sensitivity to sunlight, and may also have other toxic effects.
Buckwheat: Can cause photosensitivity.
Giant Hogweed and Common Hogweed: Can cause photosensitivity.
Cowbane: Can cause photosensitivity.
Ragwort: Causes liver damage, which can lead to increased photosensitivity.
Common Groundsel: Causes liver damage and increased photosensitivity.
Houndstongue: Causes liver damage and increased photosensitivity.
Marsh Ragwort: Causes liver damage and increased photosensitivity.
Preventing Photosensitivity
Preventing photosensitivity involves several important steps:
- Regular Pasture Inspections: Frequently inspect pastures and nearby fields for toxic plants. Removing or fencing off these plants can prevent accidental ingestion.
- Supplement Diet with Caution: While wild plants are a primary concern, ensure that hay, grains, and supplements are free from harmful botanical substances.
- Provide Shade: Ensure horses have access to shaded areas, especially between late morning and early afternoon when the sun is strongest.
- Use Protective Gear: Consider using fly masks with UV protection or lightweight, breathable sheets to protect sensitive areas.
- Monitor Your Horse: Regularly check your horse for signs of skin irritation or unusual behavior that might indicate discomfort or illness.
- Consult with a Veterinarian: If you suspect your horse is experiencing photosensitivity, contact a veterinarian immediately. They can provide advice on treatment and ways to manage the condition.
Photosensitivity can be uncomfortable for horses, but with the right knowledge and proactive measures, it’s entirely manageable. At EQUNIQUE, we are committed to the health and well-being of our equine companions. By staying informed and vigilant, we can ensure our horses enjoy the outdoors safely and healthily.
