Said It Here

Cat losing fur around neck from collar

Collars can cause a thin line of friction hair loss or allergic reactions that lead to severe scratching and hotspots. First-time owners often worry whether this hair loss is harmful or reversible.

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 off the collar entirely
  2. 2
    keeping the collar looser with a two-finger gap
  3. 3
    switching to a different style or softer fabric of collar
  4. 4
    getting a breakaway clip for safety
  5. 5
    Applying prescribed creams or treatments
  6. 6
    Putting an e-collar (cone) on the cat to prevent licking
  7. 7
    Administering Benadryl
  8. 8
    Changing cat food or monitoring diet for allergies

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/cats3 people · September 2026 – October 2026

“Anyway, I just took off his collar because I thought the fur around his neck looked funky and have for a while I just couldn’t get him to chill long enough to get the thing off him.”source ↗

“He looks like someone shaved a thin line of his fur. I know for a fact no one actually did since he’s indoor only, so it had to be the collar.”source ↗

“Is this bad? How do I fix it? And more importantly is it reversible?”source ↗

Intelligent-Bee-6973 · r/cats · 4 upvotes

“One of my cats had an allergic reactio to something that caused him to have a hotspot on his neck. He licked himself bloody. The vet and I couldn't figure out what caused it.”source ↗

Ill_Quantity_5634 · r/cats · 2 upvotes

“I don’t, like I said, he’s my first cat so I’m not exactly in the loop on things like that.”source ↗

Intelligent-Bee-6973 · r/cats · 1 upvotes

“My cat recently in 2 days started washing his back and biting his hair out. He has no fleas. Doc subscribed crème but it’s not supposed to be licked up by the cat.”source ↗

Spirited_Giraffe3768 · r/cats · 1 upvotes

Where this came up

People with this problem also raised