We are taking the jacket off a couple times a week to let the skin air out and so that she can clean herself naturally, but this one spot is horrendous. There is some hydrocortisone on the area, and she was licking herself as I was snappjng these.
What does the vet say?
Seriously, take her to a trained vet if you haven’t already.
Take your cat to the vet. If you insist on using the internet as medical advice for your pet, find a more appropriate place than this. Then also consider surrendering your cat to a friend or family member that can take them to the vet. Best of luck.
My cat had something similar and it turned out she was allergic to fleas. She didn’t even actually had fleas, just gotten bitten by a couple from neighbor cats and it took weeks to make it less itchy. A cortisone shot of like 15 bucks was all she needed. And regular flea drops.
Definitely see a vet.
Things that can help (but not remediate): Keep the water bowl full and add a second if it ever empties, just to ensure access. Keep stress low.
Dude. Take. Your. Cat. To. The. Vet!