Causes of Black Patches on Dog Skin

Could this possibly be some form of black crusty skin dog disorder?

Editor Suggestions Regarding Causes and Treatment of Black Patches on Dog Skin

The image shows a section of your dog's skin that appears to have some dark, possibly crusty areas.

Here are some likely causes and treatment recommendations:

Hyperpigmentation: Darkening of the skin often due to chronic irritation or inflammation.

Course of Action: Identify and treat the underlying cause of irritation. Consult your vet for a proper diagnosis.

Skin Infections: Bacterial or fungal infections can cause changes in skin color and texture.

Course of Action: A skin culture or cytology test may be needed for diagnosis. Antibiotics or antifungals are often prescribed.

Acanthosis Nigricans: A condition characterized by dark, thick, velvety skin, often seen in armpits and groin but can occur elsewhere.

Course of Action: Consult your vet for diagnosis and treatment, which may include treating any underlying conditions and topical therapies.

Endocrine Disorders: Conditions like hypothyroidism can cause skin changes.

Course of Action: Blood tests can diagnose endocrine issues, and medication can control them.

Contact Dermatitis: Allergic reaction to something the skin has come in contact with, although this usually results in red, not dark skin.

Course of Action: Remove the suspected allergen and consult a vet for possible allergy testing and treatment.

Seborrhea: Skin disorder that can result in flaky and sometimes darkened skin.

Course of Action: Medicated shampoos and dietary changes are often recommended.

As you can see from the long list of possible causes a veterinarian will need to take a clinical history, and possibly do a series of tests in order to get to a definitive diagnosis.

Jeff
Editor and Publisher
Dog Health Guide

Please note: This information is intended to complement, not replace, the advice of your pet's veterinarian. Always consult a vet for professional medical advice about your pet's health.