Syringomyelia in Cavaliers: Welfare and Pain Management

Key Facts

• SM affects approximately 50% of Cavalier King Charles Spaniels due to Chiari-like malformation
• Caused by overcrowding of the hindbrain in the skull, obstructing cerebrospinal fluid flow
• Signs include phantom scratching at neck or shoulder, vocalizing on movement, and touch sensitivity
• Gabapentin and NSAIDs provide pain relief but do not address the underlying cause
• Surgical decompression improves welfare in carefully selected cases with progressive symptoms

Welfare Considerations

Syringomyelia causes chronic, severe neuropathic pain that is poorly visible to owners. The phantom scratching reflects burning, tingling pain from the spinal cord cavity. Affected dogs may wake screaming from sleep, refuse handling around the neck, and show signs of chronic pain including reduced activity. Breed-wide welfare reform requires MRI screening of breeding animals and developing less extreme skull conformations. This is among the most serious breed-related welfare emergencies in veterinary medicine.

What You Can Do

• Seek veterinary assessment for any Cavalier showing phantom scratching, neck pain, or vocalizing
• Implement multimodal analgesia: gabapentin and NSAIDs as directed by your vet
• Avoid neck collars in all Cavaliers and use harnesses to eliminate neck pressure
• Discuss MRI and surgical referral with a veterinary neurologist for dogs with severe signs
• Support Cavalier breed clubs implementing MRI screening programs for breeding stock