Effects of stress on pain in horses and incorporating pain scales for equine practice.

This research article investigates how stress affects pain in horses and discusses the implementation of pain scales to assist equine veterinarians in recognizing and managing pain more effectively.

Understanding the Stress Response

• The research starts by discussing stress and its impact on an animal’s body. It portrays the stress response as a mechanism that attempts to restore the body’s state of balance, or homeostasis, after it has been disrupted by factors such as injury, intense physical activity, or psychological strain.
• This process can trigger two neuroendocrine pathways. The first is the hypothalamic-pituitary-adrenocortical axis, which increases cortisol levels in the body. Cortisol is a hormone often associated with stress. The elevation of these levels is interpreted as a response of the organism to deal with stressful circumstances.
• The second pathway involves the sympathoadrenomedullar system, which leads to elevated levels of catecholamines, another group of hormones released in response to stress. Increased levels of these hormones typically manifest in a response often termed as ‘fight or flight’, preparing the body to react to the stressful situation.

Pain Scales and Veterinary Practice

• The second half of the research focuses on practical application — particularly on the use of pain scales in equine veterinary practice, proposing that their use could dramatically improve veterinarians’ ability to recognize and manage pain in horses.
• These scales are tools that can provide an objective measure of pain levels. The use of these tools makes the assessment of pain more accurate, allowing for better-targeted and more effective treatments.
• Pain scales can have far-reaching benefits for equine health and welfare, as many ailments in horses can be traced back to pain and stress. By improving pain recognition and management, it would be possible to alleviate discomfort and potentially reduce the prevalence or severity of these conditions.