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The American Animal Hospital Association’s 2022 Pain Management Guidelines for Dogs and Cats ask veterinary teams to anticipate pain, measure it over time, and adjust treatment as the patient changes, rather than reacting once a pet is clearly in crisis. They cover acute, perioperative, and chronic pain in both species. They are clinical guidance, not a single mandatory protocol, and AAHA notes that the right approach depends on the individual patient and the practice setting. Here are the nine points that matter most for owners and the veterinary team.
1. Pain care is a cycle, not a one-time decision
The guidelines treat pain management as a loop: assess the pet, choose a treatment, reassess how the pet is doing, and then change the plan if needed. A prescription written at one visit is only the start of that loop. Owners often expect a single diagnosis followed by a fixed medication schedule, but the guidelines describe something closer to ongoing monitoring, with the plan expected to move as the pet’s pain, function, and circumstances change.
2. The goal is proactive, preemptive care
The organizing idea of the guidelines is that pain should be prevented or controlled before it escalates. The guideline summary, produced by AAHA’s advisory panel, puts it this way: “We must switch our focus from damage control pain management to proactive pain management.” In practice, that means planning analgesia before a surgery or a painful procedure, and building a multimodal approach (more on that below) rather than waiting for a pet to show obvious distress.
3. Acute pain and chronic pain need different assessment
Acute pain is usually tied to a known injury or procedure, and it has a recognizable starting point. Chronic or maladaptive pain develops through changing pain mechanisms and can be much harder to pin to one event. The guidelines address the two separately because their causes, assessment, and care planning differ.
The guidelines also address the common convention that pain becomes chronic after “more than 3 months.” AAHA describes that three-month figure as arbitrary and warns against assuming that a biological switch happens at that point. Duration is one piece of the picture, not a threshold that changes how a pet should be treated.
| Feature | Acute and perioperative pain | Chronic pain |
|---|---|---|
| Typical link | Often tied to a known injury or procedure | Develops through changing pain mechanisms; no sudden change at three months |
| Main planning goal | Analgesia matched to the degree of trauma or surgery, starting before pain escalates | Ongoing management, with regular reassessment and adaptation |
| Home period | Overlapping analgesia that reaches into the early home period | Owner observation of daily function over time |
| Musculoskeletal focus | Not singled out in the summary | Osteoarthritis is a major focus of the chronic-pain assessment guidance |
4. Assessment goes beyond touch and imaging
The guidelines count observation as a clinical tool in its own right. Depending on the species and the type of pain, the team may consider appetite, demeanor, behavior, posture, gait, movement, palpation, the context of the visit, and what owners report. Observation at rest, standing, walking, trotting, and during functional tasks such as climbing steps can all contribute to the picture.
Imaging can help identify pathology, but the guidelines state that it should not replace physical examination findings. A radiograph showing joint changes does not, on its own, tell the team how much a dog is hurting or how it is moving day to day.
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5. Dogs and cats need species-aware tools
The guidelines do not use one checklist for both species. Dogs and cats show pain differently, and cats in particular can be strongly affected by the clinic environment. The table below summarizes the tools the guidance names, with the qualifications attached to each.
| Situation | Tools or inputs named by AAHA | Notes |
|---|---|---|
| Dog, chronic pain (including osteoarthritis) | Canine Brief Pain Inventory (CBPI), Liverpool Osteoarthritis in Dogs (LOAD), Sleep and Nighttime Restlessness Evaluation (SNoRE) | Owner questionnaires that can be downloaded and used at no cost; they standardize owner observations and help track trends |
| Dog, acute pain | Appetite, demeanor, behavior, palpation, and clinical scoring tools tracked over time | Calm behavior or reduced appetite can be subtle signs. The guidelines state there is no owner-completed acute-pain tool for dogs |
| Cat, acute and perioperative pain | Colorado State University Acute Pain Scale, Glasgow short-form pain scale, UNESP multidimensional pain scale, Feline Grimace Scale | The Feline Grimace Scale scores facial expressions and requires initial training before clinical use |
| Cat, chronic pain | Owner checklists, owner-completed clinical metrology instruments, and videos of behavior at home | Clinic stress can change how a cat presents, so observation before hands-on examination is valuable |
6. Chronic pain is easy to miss at home
Gradual changes are often normalized. A dog that takes a little longer to rise from a bed, or a cat that stops jumping onto a favorite windowsill, may be read as getting older rather than hurting. The guidelines suggest that the veterinary team ask owners about concrete activities and compare them over time, rather than relying on a general impression.
AAHA gives an example of an open-ended opening question: “how is he (or she) doing?” The guidelines use it as a starting point. From there, the conversation can move to specifics:
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- Start with the open question and let the owner describe what they have noticed.
- Ask about movement: rising, stairs, jumping, walking distance, and any stiffness after rest.
- Ask about sleep, restlessness at night, and whether the pet settles comfortably.
- Ask about appetite, grooming, play, and interest in usual activities.
- Compare each answer with how the pet was a few months earlier.
- Where it helps, record a short video or photos of the behavior and share them with the team.
Owner observations are one input among several. They help the team interpret what they see in the clinic, and they do not replace a veterinary assessment.
7. Acute care should be planned before pain escalates
For acute and perioperative pain, the guidance calls for three principles: multimodal treatment, continuous overlapping analgesia that covers the early period at home, and analgesia proportionate to the trauma or surgery. Overlap matters because a gap in pain control after discharge is easier to prevent than to reverse.
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The guidelines discuss opioids, NSAIDs where appropriate, local anesthetics, cold therapy, and nursing care as clinical considerations. They also state that the specific approach varies and should be practical for the individual patient and setting. This section describes the framework; it is not a home medication guide, and no dose, drug combination, or schedule should be taken from it.
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8. Multimodal treatment is a prioritization aid, not a recipe
Multimodal care means combining more than one approach, usually a mix of medication and nonpharmacologic measures. The guidelines’ three-tier decision tree helps prioritize options by recommendation and level of evidence. Clinicians can combine tiers, so the tree is a way to order choices, not a fixed program that every pet follows.
When weighing options, the guidance points to three questions: how strong the evidence is, what impact a treatment is likely to have, and how much work it places on the caregiver. A therapy that is well supported but impractical for a household may be a poor fit for a particular pet.
The nonpharmacologic considerations named in the executive summary include:
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- Weight control and diet
- Exercise and rehabilitation
- Cold therapy
- Environmental modification
- Acupuncture
Which of these, and which medications, make sense for a specific dog or cat is a decision for the veterinarian.
9. Owners are part of the team, and plans should be revisited
The guidelines assign owners a real role. They provide history, notice behavior at home, take part in reassessment, and follow an individualized home plan. For acute pain in dogs, owners should get assessment guidance from the veterinary team, and they are encouraged to report changes from normal behavior rather than attempt their own diagnosis.
Plans are meant to be reviewed. The veterinary team should monitor whether a treatment is working, watch for side effects, check whether the plan is feasible at home, and consider caregiver burden. If a plan is not working or is too hard to maintain, the expected next step is to adapt it with the veterinary team rather than quietly skipping doses or stopping a therapy. Owners who notice new problems between visits should contact the clinic rather than wait for the next scheduled reassessment.
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