Here are some possible reasons for sores on a mare's flank:
* Insect bites: Fleas, flies, and other insects can cause irritation and sores.
* Allergies: Reactions to certain plants, chemicals, or even bedding can cause skin irritation and sores.
* Fungal infections: Ringworm and other fungal infections can cause lesions on the skin.
* Bacterial infections: Staph and strep infections can lead to skin sores.
* Nutritional deficiencies: Lack of certain nutrients can weaken the skin and make it more susceptible to sores.
* Physical trauma: Injuries from fences, other horses, or objects can cause sores.
* Hormonal changes: Some mares may experience skin changes during estrus or pregnancy.
To help your veterinarian diagnose the problem, please provide them with information about:
* The location and appearance of the sores
* When you first noticed the sores
* Any other symptoms your mare may be experiencing
* Your mare's diet, living conditions, and recent health history
Please remember, only a qualified veterinarian can properly diagnose and treat your mare's condition.