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!
How to Add Vinegar to Water to Stop a Dog's Itching. Apple cider vinegar is renowned among folk medicine enthusiasts for its human health benefits. While there's no scientific proof of its efficacy, apple cider vinegar is also reputed to cure dogs' itchy skin and repel fleas. You can apply apple cider vinegar to your dog's skin--full strength to a 50-50 mix of vinegar and water--any time you notice the dog showing signs of itchy, irritated skin.