Equine pain management moves toward structured assessment: full analysis

Pain control in horses is still more art-plus-evidence than plug-and-play protocol, and that’s the core message reinforced by Vet Times’ review of pain assessment and analgesic strategies in equine patients. The article argues that some degree of postoperative pain should be assumed in every case and managed promptly, while related coverage points to a multimodal approach, using different drug classes and techniques together, as the standard framework for both field and hospital practice. (vettimes.com)

That emphasis reflects how equine pain medicine has evolved over the past decade. Earlier practice often relied heavily on clinical impression and a relatively narrow set of familiar drugs. More recent work has pushed the profession toward structured pain recognition, pre-emptive analgesia, and combination therapy. BEVA’s primary care analgesia guidelines describe their recommendations as a systematic review of the evidence contextualized by expert opinion, which is notable in a field where day-to-day decisions are often shaped by practical constraints, patient safety, and limited species-specific labeling. (pubmed.ncbi.nlm.nih.gov)

The main therapeutic building blocks remain familiar. NSAIDs are still the most frequently administered systemic analgesics in equine medicine, but the literature cautions against oversimplified rules, such as assuming phenylbutazone is always best for orthopedic pain and flunixin for visceral pain, because evidence does not cleanly support that distinction. Alpha-2 agonists are valuable because they provide both sedation and analgesia, particularly in acute abdominal pain and trauma, though cardiovascular effects and sedation can limit use. Opioids, especially butorphanol, are widely used but can be constrained by short duration, side effects, and regulation. Lidocaine infusions are commonly used after gastrointestinal surgery, ketamine infusions may help through antihyperalgesic effects, and gabapentin is sometimes considered for suspected neuropathic pain. Epidural and local techniques can extend analgesia while reducing systemic drug exposure, although ataxia and other complications remain important considerations. (vettimes.com)

On the assessment side, the evidence base is improving, but it’s still imperfect. Studies of the UNESP-Botucatu acute pain scale and other composite tools show that structured scoring can help distinguish painful from non-painful states and guide decisions about rescue analgesia. At the same time, later validation work found meaningful limitations in clinical settings, including the effects of observer proximity, time of day, anesthesia, analgesic administration, bandages, casts, and incomplete visibility of the horse’s face or body. Researchers explicitly note that a true gold-standard method for pain assessment in horses is not yet available. In practice, that means pain scales are useful aids, not replacements for experienced clinical judgment. (pmc.ncbi.nlm.nih.gov)

Industry and expert commentary broadly supports that view. Vet Times’ equine coverage repeatedly frames pain recognition as the prerequisite for good analgesia and highlights growing interest in facial expression scales, composite tools, and other objective measures. BEVA’s guideline summary adds an important caution for primary care clinicians: all analgesic classes carry adverse-event risk, so treatment should follow full evaluation and ongoing monitoring, including for NSAID-associated gastrointestinal complications and opioid-related effects on locomotion or gut motility. (vettimes.com)

Why it matters: For equine veterinarians, the operational message is that better pain management is less about finding a single superior drug and more about building a repeatable system: anticipate pain, document it, reassess it, and layer therapies according to mechanism and risk. That matters clinically because under-treated pain can worsen welfare, impair recovery, and complicate case management, while over-sedation or poorly chosen drugs can obscure progression in colic, destabilize fragile patients, or create avoidable adverse effects. It also matters for client communication. Pet parents increasingly expect visible attention to comfort and recovery, and structured pain discussions can help explain why a horse may need combinations of NSAIDs, regional techniques, infusion protocols, or closer monitoring rather than a one-drug solution. (vettimes.com)

What to watch: The next phase is likely to focus on tools that are easier to use in real clinics, including simplified composite scales, facial-expression scoring, and possibly technology-assisted monitoring, alongside continued refinement of multimodal protocols for high-risk groups such as colic, orthopedic, and chronic pain patients. For now, the evidence supports a cautious but clear direction: assume pain is present when it is likely, assess it repeatedly, and treat it with enough flexibility to match the horse in front of you. (pmc.ncbi.nlm.nih.gov)