Hi guys, Apologies if this is not posted in the best place - we are in need of any advice and appreciate any help we can get as we are at our wits end with trying to resolve this issue! We adopted our 2 year old male cat, Biggie, last August alongside his sister. He is extremely friendly, cuddly and follows you around like your shadow. We absolutely adore him. However, it was flagged to us that due to being abandoned by previous owners and living in a shelter for a few months that he was over-washing his stomach due to stress. His stomach was patchy, flaky and he often washed it more than normal. After settling in to his new home with us, we took him to his first check up with our local vets who advised it could just be stress-related while he's had lots of changes, but recommended a diet change to Hills Prescription Diet ZD to rule out a food allergy. She also checked for mites, fleas, internal pain etc, but he seemed fine overall. After a few months of being on the Hills Prescription Diet ZD and now that he was fully settled in his new home we expected his stomach to calm down. However it did the opposite. He began to wash it so vigorously that he licked himself completely blood raw. This spread to his inner thighs, inner arms, above his eyes and around his ankles. He gets in a complete trance when washing, it literally takes two hands to pull him away from himself. He also violently bites/chews/nibbles himself too. Also his tongue is the roughest tongue we have ever felt on a cat! Please see photos below CN: Some are graphic/unpleasant so please be aware before scrolling down if you are sensitive to blood. Since then we have tried every option we/the vets can think of such as: *Antibiotics *Steroid pills *Steroid topical creams *Anti-depressants (Amittriptyline) *Strictly just on Hills Prescription Diet ZD diet *Ensuring our home is vacuumed for dust often *Felliway diffusers *Ensuring radios are left on when home alone Throughout this time, we have tried a range of cat collars/bodies/harnesses to stop him from physically ripping his skin apart but they all seem to be defeated eventually. We have tried: *Blow up fabric cones *Plastic cones *Fabric flap cones *Full fabric body suit (100% not a fan of this one!) *Custom made cones The only concoction that seems to work is a blow up fabric cone, with a plastic cone tied into it as it's sturdy enough to not be scratched off and he can't quite reach his stomach in it (although at the right angle it can be possible as we have found out).. Everytime we get to the point where fur is growing back and he is 80% recovered, he goes on a mad cleaning attack without his collar on and we are back to square one. We are tirelessly worried about him, we hate having to put these cones on him, not feed him any treats and to see him in this uncomfortable pain for 7 months now We have ordered an Anicura Natural Cat Spray which had good reviews and are also looking into a home allergy test (The vet advised it would cost a few thousand to do this through them). Has anyone ever had something similar to this before and can shed any light into how we can treat him? Any advise or recommendations would be greatly appreciated. Many thanks.