I have a 4 yr old GSD who for the past 2 yrs has been itchy all the time. We've tried and changed his diet and the shampoo that we use. now I'm thinking I'm not giving him a bath enough, usually I just do it when his coat feels dirty which is about 3 months or so. Also thought maybe it could be the dirt that's making him itch, or something outside because after he comes in and I play with him or touch his coat I feel itchy too. This has gotten so bad he's loosening his hair in certain spots, he's not completely bald but its just so short. HELP!!!