Integumentary Disorders Including Cutaneous Neoplasia in Older Horses.

The article discusses skin diseases in older horses and donkeys, emphasizing that although few conditions specifically impact this demographic, certain diseases like hypertrichosis associated with pituitary pars intermedia dysfunction are more prevalent and severe in these older animals. The paper also indicates that immune-compromising conditions can make older horses more susceptible to infectious diseases of the skin and heavy parasitism. It concludes that despite skin tumors being more common and severe in older horses, many of these serious skin tumors initially develop at a younger age.

Hypertrichosis in Older Horses and Donkeys

• The research highlights hypertrichosis associated with pituitary pars intermedia dysfunction as a common age-related skin condition in horses and donkeys.
• Hypertrichosis, also known as hirsutism, is characterized by excessive hair growth, which could affect the animal’s overall health and comfort.
• Pituitary pars intermedia dysfunction (PPID) is an endocrine disorder that affects the pituitary gland, and it’s likely responsible for this condition in older horses and donkeys.

Other Serious Conditions in Older Horses

• The paper notes that there are other conditions that can be more severe in older horses, especially when the animal’s immune system is compromised.
• Immune-compromising diseases can increase the vulnerability of older horses to infectious diseases of the skin and significantly harmful parasitism.

Neoplasia in Older Horses

• The term ‘neoplasia’ refers to the abnormal proliferation of cells, which is typically the cause of tumors.
• The article suggests that skin neoplasia is likely more common and more severe in older horses, emphasizing the importance of regular check-ups and early detection.
• However, the paper also notes the peculiar point that many of the more serious skin tumors in older horses actually begin developing when the horses are still young. This suggests a need for ongoing and consistent veterinary care throughout a horse’s life, not just in their old age.