I have a 6 month old puppy I got from a rescue centre when he was 5 months old - since neutering he keeps scratching himself and biting himself all of the time - despite not having fleas and his skin looking clear. He is creating bald patches where he has been biting and clawing. He is also now scared of vets and having sudocream put on. Please help, what can I do to stop him scratching and gnawing himself excessively and how can I gain him to go to a vet again?