What systemic conditions can be identified by changes in a dog's skin or coat?

Changes in a dog's skin or coat can serve as indicators of several systemic conditions, and allergies and infections are among the most common associations. Allergies can manifest in various ways, including skin irritation, itching, and changes in the coat's texture or appearance, such as excessive shedding or a dull coat. Infections can also lead to similar symptoms, including redness, swelling, and lesions, which are often noticeable on the skin or coat.

Both allergies and infections can signal underlying systemic issues or reactions within the body that affect the skin's health. For instance, a dog with food allergies may develop skin issues that reflect its internal condition, while a bacterial or fungal infection can be a response to compromised skin integrity or an underlying health issue. Recognizing these changes can help in early diagnosis and management of the associated conditions, making it vital for pet owners and veterinarians to observe the skin and coat as part of routine health assessments.

Other options may reference conditions that could indirectly affect skin health, but they are not as directly linked as allergies and infections are.