If you have allergies, bathing your dog every three or four weeks helps...plus, your dog won't smell
There are also injections that you can take with the actual allergen over a period of time....it causes your body to become decensitized to the allergen...some people with severe allergies have tried this and it has worked...to the point where they now own dogs and cats...but where choking and having asthma attacks a year or two back...
don't know much more about it though...maybe ask your doc.