[The development of verrucous pastern dermatitis syndrome in heavy draught horses. Part I: Review of the literature].

The article examines verrucous pastern dermatitis, a chronic skin disease that largely affects draught horses. Through reviewing various sources, the researchers present findings on potential contributing factors but acknowledge the disease’s origins and development aren’t fully understood.

Understanding Verrucous Pastern Dermatitis

• Verrucous pastern dermatitis is a chronic skin disease in horses, presenting as a greasy, odorous coating on the skin, leading to distinct calluses and wart-like growths in advanced stages.
• The disease largely affects draught horses—horse breeds designed for hard, heavy tasks—and varies in frequency across different breeds.
• Its symptoms, occurrence, and severity distinguish it as a unique disease within pastern dermatitis syndromes.

Uncertainties and Assumptions

• The literature on verrucous pastern dermatitis doesn’t present a consensus on whether the disease is connected to the horse’s sex or age.
• There’s a suggestion that horses with larger cannon circumferences and prominent fetlock hair tufts may become more severely affected.

Causes and Influences

• Cause of verrucous pastern dermatitis, or factors that aggravate it, are ascribed to a mix of influences, although this is primarily based on anecdotal reports.
• Possible contributory factors include the horse’s living conditions and environmental influences, exposure to certain chemicals, mechanical injury, the horse’s diet, and infestations of Chorioptes skin mites.
• The researchers infer that the disease may be influenced by a variety of factors, rather than having a single cause.

Knowledge Gaps

• Despite its being a known disease for centuries, there is insufficient understanding about the origins (etiology) and development (pathogenesis) of verrucous pastern dermatitis.
• The lack of concrete information illustrates a gap in the veterinary field that requires further research and investigation to fully understand and treat this chronic skin disease in horses.