What Are The Causes Of Black Patches On Dog Skin?

What Are The Causes Of Black Patches On Dog Skin?

Should you worry about black patches on your dog’s skin? Commonly referred to lichenification, black patches are caused by irritation. Black spots can appear anywhere on the body of a canine such as the back, tail, legs and so on. There’s nothing to worry about if the black spots appear without any change or sign of inflammation or in the underlying skin. It is either just a natural occurrence or a response to chronic irritation from itching and scratching. To treat the black spots, hydrogen peroxide and borax are the most popular treatments. And you should get your dog on a raw meat and bone diet immediately, which includes probiotics, digestive enzymes, coconut oil and yogurt daily.

There are several different reasons why the dark patches appear on your dog’s skin.


Flea Infection

Your dog’s skin appearance can tell a lot about his health. If your dog has dirt-like dark spots, you should take him to the vet. You may not see any fleas on your dog skin but chances are high that your dog suffers from a flea infection. One flea is enough to drive your dog crazy if he is allergic to flea’s saliva. Note that flea contamination can be very complicated and the flea product you used may not an effective one. So, always consult your vet for proper evaluation. This disease is usually treated with long-term antibiotics, generally for around 6-8 weeks.

Food Allergies

The other cause of black spots on dogs is allergies. Food allergy is one of the common allergies in dogs. There are many symptoms of allergic reactions in dogs, including hair loss, biting and licking the body in areas such as feet and paws, watery eyes, recurrent ear infections, vomiting and diarrhea.

Natural Age

It is common for black patches to show up on a dog's belly as it ages. It’s nothing to worry about as long as the black spots are not scaly, do not have an odour or are not accompanied by other symptoms such as hair loss. The black spots may darken naturally as they age.


Scabies are one of the common causes. Known as sarcoptic mange, this disease is caused by microscopic mites that burrow into the pooch’s skin. Scabies usually appears on the ear flaps, elbows, hocks, abdomen and chest of infested canines. It is difficult to diagnose, thus it’s important to consult with your vet. Treatment is a topical solution known as Revolution that is applied to the back of the dog’s neck once, then again in 3 to 4 weeks. Note that scabies is easily transferred between dogs, so keep your dog from the dogs that are infected with this disease.

Yeast Infection

Caused by an overgrowth of Malassezia Pachydermatis, yeast infection is another cause of the dark spots on your pooch’s skin. If he has a yeast infection, the dark spots are usually flush or flat, and appear around the groin area. The other symptoms include itching, oily skin, hair loss, black spots, foul smell on the skin, licking and scratching of specific areas. Your vet can use something called impression smear to check whether your dog is infected with yeast infection.

Yeast infection can be treated with medicated shampoo twice a week for several weeks then once a week for several weeks afterwards.

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