Hello @Camorra and WeLcOmE to EBN
I'm sorry Shoki is having skin issues. What did the vet say caused it? Did they do a skin scrape to rule out parasites such as Mange?
Since it comes back even after treatments it might be food related... it's very common that they're sensitive or allergic to things it can even be things in the environment.
My Boeboe has got sensitive skin, it got a little better after we started adding coconut oil and yogurt to her food but you still need to find the root of the problem