My boys are always 'neked'.

When my foster, Periwinkle, arrived, she had a collar on. As soon as she trusted me, that night, I got her 'neked'.
I noticed that her fur was so influenced by the collar, it won't go smooth.
Then I read in her Vet papers of a neck wound (healing)

Her fur is slowly returning to flat, but I think her new forever Mommy mentioned getting her a collar.

No more 'neked' Periwinkle.