Not an AIBU, but what can I do?
My cat has always been a bit of an over groomer but only ever to the point of being a bit bald by his tail ( no broken skin)
But for the last month or so my cat has been licking and biting himself to the point his skin is broken and very sore. So after vet trips, Steroids and anti biotics it’s no better and I have no idea what to do 
Previous diagnosis have been stress and a flea allergy but nothing is clearing him up.
He’s waiting to get a biopsy done, but in the mean time I have got a litter tray and put the cone of shame on him.
He’s extremely annoyed to say the least, he will hardly move all day and is refusing to use the litter tray.
He let out some loud noises earlier and I assume he’s desperate for the toilet.
I don’t know what else to do with him, the second the collar comes off he is nibbling and making himself red raw.
Anyone have any experience with an outdoor loving cat that has to stay in? I’m literally tearing my hair out on how to keep him happy but stopping him from licking himself to the bone