Diseases

When Should You Call Your Veterinarian?

Know the difference between an arthritis flare-up and a true emergency.

Gradual stiffness is expected with arthritis. Sudden changes are not. Learn the seven warning signs that need prompt veterinary evaluation.

By Dr. Rene'8 min readJul 31, 2026Vet reviewed Jul 31, 2026

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Quick answer

Call your veterinarian promptly for non-weight-bearing lameness, crying out in pain, a rapidly swollen joint, inability to stand or walk, refusing food because of pain, sudden worsening over 24-48 hours, or weakness with loss of bladder or bowel control.

In this article you'll learn

  • The seven warning signs that need prompt care
  • Why sudden changes are different from gradual stiffness
  • Conditions that mimic arthritis
  • How to keep a useful mobility journal
  • When to trust your instincts and call

When Should You Call Your Veterinarian?

Know the Difference Between a Flare-Up and an Emergency

Arthritis is one of the most common causes of chronic pain and mobility problems in dogs and cats—but it's important to remember that not every limp, stiff gait, or mobility change is caused by arthritis.

While gradual changes are common with osteoarthritis, sudden or severe changes should always be taken seriously.

Knowing when to seek veterinary care can make a significant difference in your pet's comfort, recovery, and overall outcome.

Contact Your Veterinarian Promptly If Your Pet:

  • Suddenly Refuses to Bear Weight on a Leg

    A pet that suddenly holds a leg completely off the ground may have more than a simple arthritis flare-up.

    This could indicate:

    • A cranial cruciate ligament (CCL) tear
    • A fracture
    • A dislocation
    • A severe soft tissue injury
    • A painful nail or paw injury

    While arthritis can cause limping, complete non-weight-bearing lameness deserves prompt evaluation.

  • Cries Out in Pain

    A sudden yelp, cry, or scream during normal movement isn't typical of stable arthritis.

    This could signal:

    • A spinal injury
    • A slipped disc (IVDD)
    • A ligament injury
    • A fracture
    • Severe joint pain

    Any sudden vocalization associated with movement should be evaluated by your veterinarian.

  • Develops a Swollen Joint

    Arthritic joints may become mildly enlarged over time, but rapid swelling is different.

    A swollen joint can be caused by:

    • Infection
    • Immune-mediated joint disease
    • Trauma
    • Bleeding into the joint
    • Certain cancers

    Rapid swelling should never be ignored.

  • Suddenly Can't Stand or Walk

    If your pet suddenly collapses, can't rise, or loses the ability to walk, this is an emergency.

    Possible causes include:

    • Neurologic disease
    • Spinal injury
    • Severe orthopedic injury
    • Tick paralysis (in some regions)
    • Serious systemic illness

    Immediate veterinary evaluation is recommended.

  • Stops Eating Because They're Painful

    Pain affects more than mobility.

    If your pet is reluctant to stand to eat, cries while moving toward the food bowl, or loses interest in food because movement is painful, their arthritis may no longer be adequately controlled.

    A change in appetite should always prompt a conversation with your veterinarian.

  • Seems Much Worse Than Yesterday

    Arthritis usually changes gradually.

    If your pet experiences a dramatic decline over 24 to 48 hours, it's worth investigating.

    Your veterinarian can determine whether you're dealing with an arthritis flare-up or an entirely different condition.

  • Begins Having Accidents Along With Weakness

    If your pet suddenly develops:

    • Difficulty walking
    • Weakness
    • Loss of bladder control
    • Loss of bowel control

    particularly when these signs occur together, seek veterinary care as soon as possible.

    These symptoms can indicate serious spinal or neurologic disease and require prompt evaluation.

Don't Assume It's "Just Arthritis"

One of the biggest mistakes I see is owners assuming every mobility problem is caused by arthritis.

Many conditions can look remarkably similar, including:

  • Cranial cruciate ligament (CCL) tears
  • Hip dislocations
  • Intervertebral disc disease (IVDD)
  • Muscle or tendon injuries
  • Bone fractures
  • Immune-mediated polyarthritis
  • Tick-borne diseases
  • Bone infections
  • Bone cancer and other orthopedic tumors
  • Neurologic disorders

Because the treatments for these conditions are very different, getting the correct diagnosis is incredibly important.

Keep a Mobility Journal

One of the most helpful things you can do is track changes over time.

Consider keeping notes about:

  • Difficulty getting up
  • Limping
  • Ability to climb stairs
  • Willingness to jump
  • Appetite
  • Activity level
  • Good days and bad days
  • Response to medications

This information helps your veterinarian recognize patterns and determine whether your pet's treatment plan needs to be adjusted.

Dr. Rene's Advice

"Gradual stiffness is something we expect with arthritis. Sudden changes are something we investigate."

You know your pet better than anyone else.

If something feels different—if they're suddenly struggling, seem unusually painful, or simply aren't acting like themselves—trust your instincts and call your veterinarian.

I'd much rather examine a pet and find out everything is okay than have an owner wait because they assumed it was "just arthritis."

Early evaluation often means earlier treatment, less pain, and a better outcome.

Your pet depends on you to notice the little changes.

Those little changes are often the first clues that they need our help.

Tags:arthritis emergencynon-weight-bearing lamenessswollen joint in dogIVDDCCL tearmobility journalwhen to call the vet

Educational only. This article is not a substitute for veterinary care. If your pet is unwell, please contact your veterinarian.

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