Cognitive Dysfunction in Cats UK — Dementia Signs & Senior Care

According to the PDSA and Cats Protection, cognitive dysfunction syndrome (CDS) describes gradual age-related changes in the brain that affect memory, learning, awareness and behaviour. It is sometimes called feline dementia.

CDS is not a normal part of ageing that must be accepted without help. Many signs overlap with treatable conditions — hyperthyroidism, chronic kidney disease, untreated pain from Arthritis in cats UK, high blood pressure and sensory decline. A thorough vet work-up separates CDS from reversible problems.

Watch for gradual changes in cats over 10 years old (sometimes earlier):

• Disorientation — getting stuck in corners, staring at walls, failing to recognise familiar rooms
• Altered sleep — awake and vocal at night, sleeping more in daytime
• Litter tray accidents — forgetting tray location; see Cat litter box problems
• Reduced social interaction — less interest in petting or play; or clingy anxiety
• Vocalisation — crying, especially at night, without obvious trigger
• Grooming decline — matted coat, less self-care
• Activity changes — pacing, restlessness or apathy
• Appetite changes — forgetting food location or eating less

Signs develop slowly over months. Sudden behaviour change suggests an acute illness — contact your vet promptly.

There is no single blood test for dementia. Your vet will:

• Take a detailed history of behavioural changes
• Perform a full clinical examination
• Run blood tests — thyroid, kidney, liver, glucose
• Check blood pressure — hypertension affects brain function and vision
• Assess vision and hearing — sensory loss causes disorientation
• Consider imaging if neurological signs are focal or progressive rapidly

Pain from arthritis or dental disease worsens confusion and night waking. Treating pain alone often improves behaviour significantly.

According to Blue Cross and the PDSA, management focuses on comfort, routine and mental stimulation:

Avoid rearranging furniture frequently. Keep food, water and trays in predictable places. A heated bed in a quiet area supports rest.

CDS can be distressing for owners — especially night-time vocalisation and litter accidents. Remember:

• Your cat is not misbehaving deliberately
• Punishment increases anxiety and worsens signs
• Concurrent disease treatment is as important as "brain" support
• Quality-of-life discussions with your vet help guide decisions over time

Senior cat care is covered more broadly in Senior pet care UK, including six-month health checks recommended from around seven years old.