Understanding IVDD in Dogs

If your dog has suddenly started yelping in pain, walking unsteadily, or struggling to use their back legs, IVDD could be what’s going on. Intervertebral disc disease (IVDD) is a spinal condition where the cushioning discs between the bones of the spine bulge or rupture, pressing on the spinal cord and causing anything from back pain to paralysis in severe cases.

It sounds frightening, and it can be, but it’s also one of the most common spinal conditions in dogs, and there are good treatment options available.

What is IVDD in dogs?

The spine is made up of bones (or vertebrae) with discs sitting between each one. Those discs act as shock absorbers, cushioning the spine during movement. In dogs with IVDD, those discs either bulge or rupture into the spinal canal, pressing on the spinal cord and the nerves running through it. That pressure is what causes pain, weakness, and in severe cases, paralysis.

There are three types of IVDD in dogs:

• Hansen Type I: The disc material hardens (calcifies) and then ruptures suddenly, often triggered by a movement or jump. This is the most common type in chondrodystrophic breeds, those with long backs and short legs, like Dachshunds, French Bulldogs, and Corgis.
• Hansen Type II: The disc slowly degenerates and bulges over time rather than rupturing suddenly. This is more common in older and larger breed dogs like German Shepherds and Labrador Retrievers.
• Hansen Type III: A high-speed, smaller-volume disc extrusion that can affect any breed, often occurring during exercise. It can cause sudden and severe neurological signs with very little warning.

IVDD symptoms in dogs

Symptoms vary depending on where in the spine the disc is affected and how much pressure is being placed on the spinal cord. Here’s what to watch for:

• Yelping in pain, especially when touched near the back or neck, or when being picked up
• A hunched back or stiff, rigid posture
• A wobbly or uncoordinated walk
• Weakness in the hind legs, or knuckling (walking on the tops of the paws)
• Dragging one or both hind legs
• Paralysis of the back legs
• Loss of bladder or bowel control

That last two symptoms matter a lot. Loss of bladder control alongside hind leg weakness indicates significant spinal cord involvement, and complete paralysis with loss of deep pain sensation in the hind legs is a genuine emergency. If your dog can’t feel their back legs when you pinch the toes firmly, contact an emergency vet immediately. Time is critical in these cases.

What causes IVDD in dogs?

IVDD is primarily genetic. Certain breeds are born with discs that are predisposed to early degeneration, and there’s little that lifestyle changes can do to fully prevent it. That said, maintaining a healthy weight and avoiding repetitive high-impact activities can reduce stress on the spine.

Key risk factors include:

• Breed: Chondrodystrophic breeds (those with abnormally short limb bones relative to body length) are at the highest risk. Dachshunds are particularly affected, with nearly 1 in 4 developing IVDD during their lifetime. Other high-risk breeds include French Bulldogs, Pembroke Welsh Corgis, Basset Hounds, Beagles, and Shih Tzus.
• Age: Disc degeneration is a natural part of aging. Larger breeds tend to develop Hansen Type II IVDD in their middle to senior years.
• Genetics: The underlying disc abnormality is inherited, making some dogs simply more vulnerable regardless of lifestyle.

How IVDD is diagnosed

Your vet will start with a physical and neurological exam, assessing your dog’s gait, pain response, reflexes, and ability to feel sensation in their limbs. From there, imaging is used to confirm the diagnosis and locate the affected disc:

• X-rays: Can suggest disc disease by showing narrowed disc spaces or calcified discs, but cannot directly show spinal cord compression.
• CT scan: Widely available at specialist centres and very effective at identifying disc herniations, particularly calcified ones.
• MRI: The gold standard for visualising the spinal cord and soft tissue, and the most detailed option for surgical planning.

Your vet will assign your dog a neurological grade from 1 to 5 based on their symptoms:

Grade	What it means
Grade 1	Pain only, no neurological deficits
Grade 2	Weakness but still able to walk
Grade 3	Unable to walk but can still move the legs
Grade 4	Paralysis but able to feel deep pain in the limbs
Grade 5	Paralysis with no deep pain sensation, requires urgent surgery

Treatment for IVDD in dogs

The right treatment depends on how severe your dog’s IVDD is. Here are the most common options:

• Conservative treatment: For mild to moderate cases, vets may recommend strict crate rest (4–6 weeks), anti-inflammatory meds, and pain relief.
• Surgery: For more severe cases or when conservative care doesn’t work, surgery removes herniated disc material to relieve spinal compression.
• Rehabilitation: Recovery plans often include physical therapy, like underwater treadmills, to rebuild strength and improve mobility.

Surgery can be pricey (sometimes upwards of $5,000) but can greatly improve outcomes, especially for grades 3–5 IVDD.

Recovery and prevention

Recovery timelines vary widely depending on severity and treatment type. Mild cases managed conservatively may resolve within 4 to 6 weeks. Surgical cases typically see meaningful improvement within 6 to 12 weeks, with full recovery sometimes taking several months.

Practical things that help during recovery:

• Ramps or steps instead of jumping on and off furniture or in and out of the car
• A supportive harness for dogs that need help walking
• Orthopedic bedding for comfort
• Keeping body weight in a healthy range to reduce spinal load
• Following the rehabilitation plan from your vet or physiotherapist consistently

For breeds prone to IVDD, managing lifestyle factors thoughtfully is a reasonable long-term approach, even after recovery.

Is IVDD covered by pet insurance?

Yes, IVDD is covered under Lemonade Pet’s base accident and illness policy, as long as it isn’t pre-existing. That includes eligible costs like diagnostic imaging, surgery, and follow-up care that’s typically part of treatment.

Recovery from IVDD often involves physical therapy: structured rehabilitation to help your dog regain strength and mobility. Lemonade’s Physical Therapy add-on can help cover the cost of those sessions, making it easier to follow through on the full course of recovery your dog needs.

Getting a policy in place before any symptoms appear is especially important with IVDD, as it can come on suddenly. Once signs show up, the condition is typically considered pre-existing and won’t be eligible for coverage.

Before we go

IVDD is a serious diagnosis, but with prompt treatment and a solid rehabilitation plan, many dogs recover well and get back to living comfortably. If you notice signs of pain, weakness, or coordination issues, contact your vet right away. Acting quickly makes a real difference in the outcome.

If you don’t have a pet insurance policy in place yet, it’s worth taking a few minutes to explore your options. Getting a quote is straightforward, and having coverage before anything develops puts you in a much stronger position when it matters most.

Frequently Asked Questions

A few quick words, because we <3 our lawyers: This post is general in nature, and any statement in it doesn’t alter the terms, conditions, exclusions, or limitations of the policies issued, which differ according to your state of residence. You’re encouraged to discuss your specific circumstances with your own professional advisors. The purpose of this post is merely to provide you with info and insights you can use to make such discussions more productive! Naturally, all comments by, or references to, third parties represent their own views, and Lemonade assumes no responsibility for them. Coverage may not be available in all states. Please note that statements about coverages, policy management, claims processes, Giveback, and customer support apply to policies underwritten by Lemonade Insurance Company or Metromile Insurance Company, a Lemonade company, sold by Lemonade Insurance Agency, LLC.  The statements do not apply to policies underwritten by other carriers.