CONDITION
Intervertebral Disc Disease (IVDD)
Intervertebral disc disease describes a group of conditions in which the cushioning discs between the bones of the spine become damaged, degenerate, or shift out of position. When this happens, the disc material can press on the spinal cord or the nerves that branch from it, interfering with the signals that travel between the brain and the rest of the body. The result can range from discomfort and stiffness to profound weakness or loss of coordination in the limbs. Owners often notice a change in how their dog moves or holds itself — reluctance to jump, a hunched posture, unsteadiness in the back legs, or dragging of the paws. In some cases the change is gradual; in others it appears quite suddenly. Certain breeds, particularly those with long backs or short legs, are seen more frequently, though the condition can occur in any dog. This page explores what may be observed when disc disease is present, the mechanisms that lead to pressure on the spinal cord, how the problem is investigated using imaging and examination, and the range of approaches used to manage it — both supportive and surgical. The course and outcome depend on the severity of nerve involvement, the speed of onset, and the individual animal.
Why this matters now
IVDD is extremely common in certain breeds, particularly Dachshunds, French Bulldogs, Beagles, Corgis, and Cocker Spaniels. These breeds often have disc changes occurring earlier in life, sometimes affecting dogs as young as two to four years old. Other breeds more typically develop disc problems in middle to older age. Episodes may occur suddenly or develop gradually.
The condition ranges from mild back pain to complete paralysis depending on severity and location. Type I disc disease involves sudden disc rupture with acute onset of signs. Type II involves gradual disc bulging with more slowly progressive symptoms. Some dogs experience single episodes that resolve, whilst others have recurrent problems or progressive deterioration. The location of the affected disc determines which body regions are affected.
Signals & patterns
Early signals
Reluctance to move or change position
Dogs may be unwilling to jump, climb stairs, or move their head and neck normally.
Crying out when touched or moved
Pain may cause vocalisation, particularly when the spine is manipulated or pressure is applied.
Hunched or tense posture
Dogs often arch their back or hold their neck stiffly when experiencing spinal pain.
Shaking or trembling
Pain and muscle tension may manifest as visible trembling.
Later signals
Weakness or wobbliness in the hind legs
Compression of the spinal cord affects nerve function, causing coordination problems or weakness.
Dragging one or both back feet
More severe compression causes loss of ability to consciously control limb placement.
Inability to walk
Significant spinal cord damage can result in paralysis of the affected limbs.
Loss of bladder or bowel control
Severe compression may affect the nerves controlling urination and defecation.
Click to read about the biological mechanisms
How this is usually investigated
Assessment of suspected IVDD combines neurological examination with advanced imaging to localise the problem and guide treatment decisions.
Neurological examination
Radiographs
MRI scan
CT scan or myelography
Blood tests
Options & trade-offs
Treatment approach depends on severity of signs, which specific disc is affected, and how quickly the condition has progressed. Options range from conservative management to surgical intervention.
Conservative management
Strict rest, pain management, and anti-inflammatory medications.
Trade-offs: May be appropriate for first-time episodes with pain only or mild neurological signs. Requires several weeks of strict cage rest. Does not address the underlying disc problem.
Surgical decompression
Removal of disc material compressing the spinal cord.
Trade-offs: Typically recommended for more severe signs or cases not responding to conservative treatment. Success rates vary depending on presenting severity. Requires specialist surgical facilities.
Physical rehabilitation
Structured exercises, hydrotherapy, and physical therapy.
Trade-offs: Important adjunct to both surgical and conservative treatment. Helps maintain muscle mass and can assist neurological recovery.
Mobility support
Carts, slings, and assistive devices for dogs with significant deficits.
Trade-offs: Can maintain quality of life for dogs with permanent weakness. Requires owner commitment to daily management. Some dogs adapt remarkably well.
Common misconceptions
"IVDD only affects Dachshunds"
Whilst Dachshunds are particularly predisposed, IVDD is common in many breeds including French Bulldogs, Beagles, and Corgis. Any breed can be affected.
"Back pain means the dog will become paralysed"
Many dogs experience only pain without progressing to weakness. The spectrum of severity is wide, and many cases resolve with appropriate management.
"Paralysed dogs should be euthanised"
Whilst severe IVDD is serious, many paralysed dogs recover function with appropriate treatment. Even those with permanent deficits can often maintain good quality of life with supportive care.
Related conditions
Fibrocartilaginous Embolism (FCE)
Fibrocartilaginous embolism can present with sudden-onset weakness or paralysis similar to that seen in acute disc herniation, though the mechanism differs—FCE involves blocked blood flow to the spinal cord rather than direct compression. Distinguishing between the two often requires advanced imaging and careful assessment of the pattern and progression of signs.
Wobbler Syndrome (Cervical Spondylomyelopathy)
Wobbler syndrome involves compression of the spinal cord in the neck region, often through a combination of disc material, bone changes, and ligament thickening, and can produce neurological signs in the limbs similar to those seen in intervertebral disc disease affecting the cervical spine. The two conditions share overlapping mechanisms—disc degeneration and spinal cord pressure—though wobbler syndrome typically develops more gradually.
Lumbosacral Stenosis
Lumbosacral stenosis describes narrowing and nerve compression at the junction between the lower back and pelvis, and while the site differs from the thoracolumbar region most often affected by disc disease, both conditions involve degenerative changes that place pressure on nerve tissue. Owners may observe similar reluctance to move, stiffness, or altered gait, though lumbosacral stenosis often presents with pain on rising or difficulty jumping rather than acute paralysis.
Discospondylitis
Discospondylitis involves infection of the intervertebral disc and adjacent bone, and can present with back pain, reluctance to move, and sometimes neurological signs that may initially resemble those of disc herniation. Imaging and clinical course help distinguish infection from the mechanical compression typical of degenerative disc disease, though both conditions affect the same anatomical structures.
Noting the timeline of symptom development and any triggers may provide useful information. Observing whether the dog can walk, stand unaided, and feel when their toes are touched helps assess severity. Keeping at-risk breeds in good body condition and avoiding activities that stress the spine may help reduce risk.
Last reviewed: 24 April 2026 · Dr Alastair Greenway MRCVS