We had problems with our doberman scratching and licking until hair was gone. She was real bad under her front arm pits. Turned out she's allergic and we had to find just the right food. Nothing else helped. You can try doggy benadryl in the short term to help calm it down.
Our female labradoodle has the same thing. Stopped the store bought doggy treats and now make frozen yogurt treats with some plain flavor yogurt. Hers cleared up right away. Her coat is better than ever and they love them.
Take an ice cube tray and put a scoop in each. Freeze them and enjoy!
My English bulldog used to develop hot spots until we changed food. Both our dogs now are on grain free and haven't had those problems in two years. I clean his folds w malecetic wipes and I've read I think hotspots can be cleaned w those as well but I could be wrong.