Skin infections are a very common in dogs and account for a high number of vet visits.
There are many differences between the skin of humans and the skin of dogs, with some of these characteristics potentially contributing to the prevalence of skin disease in dogs. Firstly, human skin is more acidic than dog skin. The acidity may help to protect human skin from invasion by microorganisms as some bacteria are inhibited in a more acidic environment. In addition, dogs have thinner skin than humans, making it more susceptible to damage which can worsen skin disease.
It is normal to have some microorganisms on the skin but when the skin is disrupted these organisms can overgrow leading to infection. Skin infections in dogs are often secondary to an underlying skin disease such as an allergy, endocrine disease or ectoparasites. It is important to diagnose and manage the underlying skin disease to minimise the incidence of skin infections.