What is a dermatological condition found in foundation-bred Quarter Horses?

HERDA, or Hereditary Equine Regional Dermal Asthenia, is a significant dermatological condition commonly associated with foundation-bred Quarter Horses. This genetic disorder leads to the skin becoming extremely fragile and prone to tearing, often resulting in scars and severe skin problems. The condition is inherited in an autosomal recessive manner, meaning that horses must have two copies of the defective gene to display symptoms.

The distinct nature of HERDA, being linked to this specific breed lineage, makes it particularly relevant when discussing dermatological issues within the context of foundation-bred Quarter Horses. In contrast, while conditions like rain rot and sweet itch can affect various breeds, they are not uniquely or primarily associated with this type of Quarter Horse. Warts, although they can appear in horses, do not have the same significant genetic implications and are not specific to foundation-bred Quarter Horses. Therefore, recognizing HERDA as a breed-related condition highlights its importance in the health management of these horses.