My 18mth old dog who I have had for 3 mths is scratching off his hair on his neck so bad he is breaking his skin and now has a large bald patch. I took him to the vet 3 weeks ago who said it may be an allergy and gave him a course of steroids. If anything it has gotten worse. I have put a doggy jumper on him now to try and prevent him doing more damage and I will of course be bringing him back to the vet. Have any of you come across this with your dogs and if so what caused it and how best did you treat it?