Senior Cat Cognitive Dysfunction Syndrome

Cognitive dysfunction syndrome (CDS) in senior cats causes disorientation, vocalisation, and changes in behaviour analogous to dementia, requiring proactive welfare management.

Key Facts

Up to 50% of cats over 15 years old show signs of cognitive dysfunction syndrome
CDS signs include night-time vocalisation, litter box avoidance, reduced grooming, and disorientation
Brain changes in feline CDS resemble Alzheimer's pathology with beta-amyloid deposition
Environmental enrichment and structured routines can slow progression and improve quality of life
Pain assessment is critical: many CDS signs overlap with those of unmanaged chronic pain

Welfare Considerations

Feline CDS is underdiagnosed and undertreated, partly because owners attribute signs to "normal ageing." But confusion, disorientation, and night-time distress cause genuine suffering. Pain management is the first priority since pain mimics and accelerates cognitive decline. Environmental modifications — non-slip floors, low-sided litter trays, nightlights, maintaining predictable routines — reduce distress from spatial confusion. Dietary supplements with antioxidants, omega-3 fatty acids, and S-adenosylmethionine have evidence for slowing progression. Quality-of-life assessment should guide decisions about continuing treatment versus palliative care. Vets should screen every senior cat for CDS signs at annual visits.

What You Can Do

Have your cat screened for CDS at annual vet checks once they reach 10 years of age
Modify your home to help a cognitively impaired cat — nightlights, consistent furniture placement
Discuss supplementation and pain management options with your vet if CDS is diagnosed