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.
Soothes itchy ears. Diluting apple cider vinegar with 50 percent water provides a solution for a common dog problem: itchy ears. Just use a cotton swab or gauze pad soaked in the diluted vinegar. If itchy ears continue, your dog may be allergic to something in his diet.
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.