Said It Here

Why is my healthy cat suddenly losing fur?

Cats can suddenly develop thin fur, patchy spots, or bald areas on their back and ears while otherwise acting completely normal and healthy. This unexpected hair loss leaves owners wondering why it is happening and whether it signals an underlying health or grooming issue.

What people tried

Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.

  1. 1
    taking him to the vet for a checkup to be on the safe side
  2. 2
    checking the skin for dryness or flakiness to look for ringworm
  3. 3
    consulting a veterinarian for treatment
  4. 4
    dismissing it as normal behavior related to scent glands on the head and ears

In their words

Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.

r/cats2 people · September 2026

My 9 yo black short hair female suddenly has these bald spots on one ear. Just noticed it today. She’s generally healthy otherwise. Only current med it Catlax for hairballs. Any ideas?source ↗

Primary-Coffee5423 · r/cats · 8 upvotes

Goose, my 3 year old ragdoll boy, has recently started losing his fur on either side of his upper back… its very strange.. he looks kinda patchy in the sunlight but its like super thinsource ↗

he doesnt act any differently & am just wondering on why this is happening.source ↗

VirusWide3003 · r/cats · 3 upvotes

Where this came up

People with this problem also raised