The spine is made up of vertebrae separated by intervertebral discs, which act as shock absorbers and allow flexibility and movement. In dogs predisposed to IVDD, these discs can undergo premature degeneration, becoming hardened or brittle over time. This makes them more likely to bulge or rupture, pressing on the spinal cord or surrounding nerves. The result can range from mild discomfort to severe neurological impairment depending on the location and severity of disc damage.
Clinical signs of IVDD can vary depending on the stage and location of disc involvement. Early symptoms may include stiffness, reluctance to jump or climb stairs, reduced activity, or mild back or neck pain. As the condition progresses, dogs may show more obvious signs such as arched back posture, crying out in pain, weakness in the limbs, loss of coordination, or difficulty walking. In severe cases, dogs may experience partial or complete paralysis, particularly in the hind limbs, and may lose bladder or bowel control. IVDD can develop suddenly or progress gradually over time.
The IVDD Spine Screening Test may include genetic testing (where available for certain breeds), clinical risk evaluation, and interpretation of known breed predispositions. Some breeds, particularly those with long backs and short limbs, such as Dachshunds, Beagles, and Corgis, are more commonly affected due to structural and genetic factors. Testing helps identify dogs with inherited risk factors that may contribute to early disc degeneration.
Genetic testing, when available, is performed using a simple cheek swab or blood sample analyzed in a specialized laboratory. The results help determine whether a dog carries known genetic variants associated with increased IVDD risk. Since DNA remains unchanged throughout life, testing can be done at any age.
Results may be interpreted as:
- Low Risk: No known genetic markers associated with increased IVDD susceptibility detected.
- Carrier/Moderate Risk: Dog may carry genetic factors or breed-related predisposition that could increase likelihood of disc disease.
- High Risk: Dog has significant genetic or breed-associated predisposition to developing IVDD.
It is important to note that IVDD is a complex condition, and not all cases are strictly genetic. Environmental factors such as obesity, activity level, jumping habits, and overall fitness also play a major role in disease development and progression.
Genetic and risk screening for IVDD provides valuable guidance for breeders, veterinarians, and dog owners. Breeders can use this information to reduce the prevalence of high-risk traits in breeding programs while maintaining healthy genetic diversity. For dog owners, understanding risk status supports preventive care strategies such as weight management, controlled exercise, avoiding excessive jumping, and early veterinary attention if symptoms appear.
The Intervertebral Disc Disease (IVDD) Spine Screening Test is a valuable tool that supports responsible breeding practices, improves awareness of spinal health risks, and helps reduce the impact of this painful and potentially disabling condition in dogs.
