There are many reasons for dry skin on dogs, Proietto noted.
Dry skin is often caused by allergies to a dog’s food or environment, though it can also be caused by a reaction to medications or a bacterial or fungal infection (such as ringworm). In addition, it can result from more serious causes such as hypothyroidism or Cushing’s disease, which tends to affect older dogs. Scaly, inflamed skin and hair loss may even suggest the presence of parasites, such as mites or scabies, or other serious medical conditions.
Luckily, with time and care, most dry skin is very treatable. It may be as simple as changing house cleaning products or taking chicken, a common allergen and one of the most popular dog food ingredients, out of your pup’s diet. If you notice that your dog’s scratching is focused primarily on their face, ears, feet and behind, poultry may be the problem.
Some dogs are more susceptible to skin irritations than others. Pit bull terriers, American bulldogs and Dalmations can be prone to skin infections as a result of an increased sensitivity to demodex, a tiny mite that lives near hair follicles, in these breeds.