Discospondylitis

Discospondylitis is an infection involving one or more of the intervertebral discs—the cushioning structures that sit between the bones of the spine—and the adjacent vertebrae themselves. The infection can arrive through the bloodstream from elsewhere in the body, or more rarely through direct penetration or spread from nearby structures. It tends to cause pain localised to the affected area of the spine, and in some cases may affect nerve function if swelling or structural change begins to compress the spinal cord. Owners often notice reluctance to move, stiffness, a hunched posture, or sensitivity when the back is touched. Some dogs may show more generalised signs such as reduced appetite, low energy, or fever, particularly in the earlier stages. Cats are less commonly affected, but similar patterns can occur. The signs can develop gradually or appear more suddenly, and the severity varies depending on the location and extent of the infection. This page explores the signals that may appear, what is happening within the spine and surrounding tissues, how the condition is investigated through imaging and laboratory tests, and the range of approaches used to manage infection, pain, and structural stability over time.