A 2-Year-Old Filly With Hereditary Equine Regional Dermal Asthenia: The First Case Report From China.

The study presents the first case of hereditary equine regional dermal asthenia (HERDA) in China, identified in a 2-year-old Quarter Horse filly through genetic testing and clinical signs such as loose, thin skin and open wounds.

Scope of the Study

The research focuses on diagnosing and reporting the first known instance of HERDA, a genetic skin condition, in China (and also the entire Asian region). The individual in focus was a 2-year-old Quarter Horse filly.

Disease Overview

• HERDA is an autosomal recessive inheritable disorder typically found in Quarter Horses and related breeds.
• The condition is characterized by stretchy, loose, and thin skin and the presence of open wounds primarily on the upper body of the horse.

Clinical Findings

• The relevant clinical observations made in this case were those aligned with the disease’s common symptoms – the Quarter Horse filly presented with stretchy, loose, thin skin, and open wounds on its upper body.

Methodology: Genetic Testing

• Genetic testing was used as a diagnostic tool to confirm the existence of HERDA in the horse.

Biopsy and Result

• A skin biopsy of the horse was performed.
• The results from the biopsy were consistent with the usual findings associated with HERDA, bolstering the diagnosis made through the genetic test and clinical signs.

Significance and Recommendation

• This case report marks a significant milestone as it is the first documentation of HERDA in China and expands our knowledge of the geographical prevalence of this disease.
• The researchers suggest implementing genetic testing protocols in breeding farms to proactively identify and consequently prevent the proliferation of this disease.