My cats have told me that they do things their way. Being neutered is another of those things.
A female shorthair started to lick all the fur off herself. We thought she was going to naked! The vet said he'd seen such behavior and prescribed human birth control pills. To the human pharmacy with the scrip. The pharmacist looked at me and told me he didn't think they were going to do the job for me! I asked him to look at the heading on the scrip. We both had a good laugh. And Tinker quit itching and so quit licking herself bald.
I guess the trick with cats is to just patiently keep at the problem until it's solved. Can't do without them, though.
Take it gently, P