Cat Cognitive Dysfunction: Signs, Management, and What to Expect

Feline Cognitive Dysfunction Syndrome (CDS) is a neurological condition in older cats involving progressive deterioration of brain function. It is the cat equivalent of Alzheimer's disease. Despite being common, it remains largely under-diagnosed because owners and sometimes vets attribute the signs to normal ageing.

Recognising the signs: the DISHA framework

Veterinary professionals use the DISHA framework to screen for CDS:

D: Disorientation. Getting stuck in corners, staring at walls, appearing confused about familiar environments, not recognising familiar people.

I: Interaction changes. Reduced interest in social interaction, or increased neediness. Changes in how the cat relates to family members.

S: Sleep-wake cycle changes. Waking at night and vocalising, sleeping much more during the day, reversal of day and night patterns.

H: House soiling. Missing the litter tray or urinating in unusual places despite previously reliable use.

A: Activity changes. Aimless wandering, repetitive behaviours, reduced interest in play or normal activities.

The more of these categories are affected, the more strongly CDS is suggested. Keep a note of specific examples to share with your vet.

Diagnosis

There is no single definitive test for CDS. Diagnosis is reached by ruling out other medical conditions through blood tests, urine tests, and blood pressure measurement. Your vet will also assess the pattern and history of behaviour changes and may use a standardised questionnaire to score the severity of symptoms.

Management

Medication

Selegiline (sold in Europe as Selgian) is the only medication currently licensed in Europe for feline CDS. It increases dopamine availability in the brain and has been shown to improve cognitive function and quality of life in some cats. Not all cats respond and improvement may be modest, but it is worth discussing with your vet.

Dietary support

Prescription diets formulated for senior brain health contain antioxidants, omega-3 fatty acids, and other nutrients associated with neurological support. Your vet can recommend specific options.

Supplements

SAMe (S-Adenosyl methionine) has some evidence for cognitive support in cats. Vitamin E, vitamin C, and omega-3 fatty acids from fish sources are also used as supporting supplements.

Environmental support

Night lights in rooms the cat uses reduce disorientation in the dark. Keep furniture layout consistent and avoid moving things around. Maintain feeding times and the cat's regular spots as consistently as possible. Handle gently and predictably since CDS cats can become confused by sudden approaches.

Quality of life

CDS is progressive. The goal is not to reverse the changes but to ensure the cat remains comfortable and is not distressed. Regular vet check-ups help monitor progression and adjust management. Your vet is your best resource for the difficult conversations about quality of life as the condition advances.

Related articles

• Senior Cat Behaviour Changes
• Anxiety in Older Cats
• Why Does My Cat Yowl at Night?

Frequently asked questions

Can cognitive dysfunction in cats be treated?

Not cured, but managed. Medication such as selegiline, dietary supplements, and environmental adjustments can slow progression and significantly improve quality of life. Early diagnosis gives the most scope for management.

How common is cognitive dysfunction in cats?

Studies suggest it affects around 28 per cent of cats aged 11 to 14 and significantly more over the age of 15. It is often missed because the signs are attributed to normal ageing rather than a specific condition that can be managed.