The cause of Plummer-Vinson syndrome is unknown; however, genetic factors and nutritional deficiencies may play a role. Women are at higher risk than men.
(This will also rejuvenate the coat and help balance your dogâs skin pH levels.) For a shiny, healthy coat mix 1 cup of vinegar with 2-4 cups of water and use as a final rinse. Spray vinegar full-strength on your dogâs coat to normalize the pH balance of its skin. (This is one of my personal favorites!
Photo credit: Wikihow apple cider vinegar for dogs. 1  Make a mixture of equal parts distilled water and apple cider vinegar. 2  Soak cotton balls in the mixture.  Swab your dogâs ears, going in only as far as you can see, until the cotton balls come out clean.