My GSD has recently been itching like crazy, to the point were he's loosing fur. We used to live in Germany and he had no problems there, but once we moved to Florida he started itching like crazy. I give him baths every month and let him swim at the beach weekly. I feed him normal Pedigree dog food. I also checked whether there are any fleas and ticks. His shots are also up-to-date. Any Suggestions? Thanks!