Signs of Dementia in Old Cats (CDS)

We talk about Alzheimer's in humans, but cats get a very similar condition called Cognitive Dysfunction Syndrome (CDS). It affects 50% of cats over 15.

The Symptoms (DISHA)

Vets use the acronym DISHA to diagnose it.

D - Disorientation

• Getting "stuck" in corners.
• Staring at walls.
• Forgetting how to use the cat door.

I - Interactions

• Becoming suddenly clingy OR suddenly aggressive.
• Not greeting you at the door anymore.

S - Sleep/Wake Cycle

• The Night Yowl: This is the #1 complaint. The cat wakes up at 3 AM confused and howls loudly. They have their days and nights mixed up.

H - House Soiling

• Forgetting where the litter box is.
• Going near the box but not in it.

A - Activity

• Wandering aimlessly (pacing).
• Decreased grooming (matted fur).

Treatment (Turning Back the Clock)

You cannot cure it, but you can slow it down.

1. Diet: Foods rich in Vitamin E, C, and Beta-Carotene (Antioxidants) help brain health.
2. Supplements: Senilife or Solliquin are common vet prescriptions.
3. Nightlights: Older eyes see poorly. Add nightlights to help them navigate.
4. Ramps: If they can't jump, their world shrinks. Give them access back to the window.

Differentiate from Pain

Often, a cat peeing outside the box isn't "forgetting"—it's because they have arthritis and the box is too high to step into. Always treat pain first.

Read Next: Arthritis Management for Cats