To take care of crusty scabs on your dog, ensure that your pet’s skin is not dry. Use coconut oil to keep the skin soft and fish oil to maintain healthy skin. At the same time, you can bathe your dog with anti-bacterial and anti-fungal shampoos to remove the crusty scabs on his back.

A clean environment, a healthy diet, regular bathing, and grooming can help your dog maintain healthy skin. Doing this will ensure that your pet does not have irritable or dry skin.

Have you felt a growth on your dog’s skin when running your hand through your pet’s coat? That is the new skin growing over damaged skin on its back.

It is a common occurrence that usually does not result in a significant medical problem. Either skin diseases or parasites can cause scabs. More severe cases are indicative of an underlying medical condition affecting the dog.

Table of Contents

Causes Of Crusty Scabs In Dogs

Allergies Could Be Why Your Dog Has Crusty Scabs

Dogs, like humans, have things they are allergic to. Their allergic reactions can cause them to become irritated; meanwhile, different kinds of allergies can cause your dog to have this condition.

Environmental Allergies

Dogs’ environmental allergies include lawn treatments, floor cleaners, and laundry detergent. It can also be caused by anything from fertilizer to dog shampoo or other products used to care for your pet.

Pollen Allergies

We all know how dogs love to romp around and occasionally dive into a clump of pollen-laden flowers or shrubs. It is common for a dog to have an allergic reaction when its skin comes in contact with pollen.

This can lead to dermatitis, which results in itching, rashes, blisters, sores. Furthermore, these allergic reactions are likely to result in scabs. It is more prevalent in dogs with shorter furs, and Pollens can quickly reach a dog’s skin with shorter coats.

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Food Allergies

Although food allergies are more common in humans, they are also common in dogs. It can have several effects on your dog, including skin irritation. The skin irritation causes itching, ranging from minor to severe.


Parasites are tiny insects that live and feed on your dog. They bite and soak their blood which causes them to lick, chew, and scratch their body excessively. As a result, they experience pain, tenderness, and crusty scabs. Different types of parasites affect your dog and cause crusty scabs.


These parasites feed on your dog’s blood, which causes severe skin irritation. Unlike fleas, they are often visible to dog owners. The irritation from their bites causes your pup to scratch and form crusty scabs all over its body.


One parasite that is more often than not found on dogs is fleas. Often invisible to the eyes, flea bites irritate your dog’s skin, making them scratch or lick the area where the parasite bit it. This causes dry, sensitive patches to appear on your dogs, resulting in scabs.

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Scabies mites and Demodex mites are the two types of mites that live off your pet’s skin and blood. Their bites can cause Mange in your dog, and Mange is an ailment that causes your dog to lose all of its furs and develop crusty scabs.

You should know that Mange caused by a Scabies mite is contagious to people and other animals. in contrast, demodectic Mange is not. Also, Scabies, on the other hand, can be more serious and inflict more damage.


Skin infections are also one of the major causes of scabs in dogs. It might be that your pet has either a fungal infection, bacterial infection, or yeast infection. It can also be a combination of two or three types of disease.

Fungal Infection

Ringworm is the most common fungal infection in dogs. It causes skin irritation, hair loss, itching, and scaly skin. However, younger puppies are susceptible to contracting this infection. You can identify the irritation spots on your dog as they will be in the shape of a ring.

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Bacterial Infection

Infections develop when your dog’s irritated skin is continually chewed and licked. This results in skin breakage, allowing bacteria to enter and cause other diseases.

As the bacteria enters, it causes more irritation, leading to more scratching and crusty scabs.

Yeast Infection

Yeast is usually present in a dog’s skin. However, the skin might become irritated and uncomfortable when it builds up in a warm, moist area on your dog’s body.

Your pet will scratch and chew incessantly to soothe the itch and irritation it feels, resulting in crusty scabs. It is easy to detect yeast infection: the affected area is often discolored aside from the scabs.

Immune Disorder

Immune disorders weaken your dog’s immune system, which affects its ability to fight off infections and other attacks. Consequently, its skin cannot fight off infections and bacteria as well as it usually would, resulting in skin disorders, including scabs and sores.

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Another explanation for crusty scabs is that a dog’s immune system is fighting itself, trying to stop bacteria from entering its body.

Nutritional Deficiency

Your dog’s skin requires specific nutrients in specific amounts to stay adequately hydrated, which keeps it moist, moisturized, and shiny. Skin irritation, rashes, and itching can result in sores and scabs on a dog’s skin if they don’t get enough minerals and vitamins in their diet.

Hormonal Imbalance

Hormonal changes can disrupt the balance of oils in your dog’s skin, and it can cause your pet to lose its furs, making its skin sensitive and irritated.

Also, this results in sores and crusty scabs. Hormone imbalances can sometimes indicate the presence of hypothyroidism, Cushing’s Disease, and other diseases in your dogs.

Prevention And Care Of Crusty Scabs

Healthy Diet

A balanced diet can help maintain good skin and coat for your pet. Certain grains are known to cause skin irritation and allergies. Some diets are specially formulated to help dogs with their skin and coat.

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Fish Oil

Certain oils are necessary for a dog’s skin and coat to be healthy, but not all canines get enough of them in their diet, contributing to skin problems. Give your dog fish capsules or mix fish oil liquid with his diet to solve this problem.


Frequent brushing helps your dog maintain his skin and coat clean and healthy. It helps to remove dirt from your dog’s coat simultaneously. It also helps spread the natural oils across the skin to protect it against bacteria and fungi.

Bathing Can Help Dog With Crusty Scabs

Ensure you bathe your dog regularly and do not use a stiff brush or sponge on your pet. It is essential also to know that too many baths can cause your dog to have dry skin, which can cause scabs in your pet.


In the treatment and care of crusty scabs on your dog’s back. Use shampoos that are recommended for your pet. Ensure that the shampoo you use on your dog does not contain allergens that would cause your dog’s skin to be irritated. And do not use your shampoo on your dog.

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Hygienic Environment

Your dog’s environment should be clean and hygienic for it. This is because your dog can come into contact with substances that can cause irritations to its skin. Ensure you wash its bed frequently and clean its sleep area often.

Treatment And Care Of Crusty Scabs On Your Dog

Scabs can be treated using anti-bacterial and anti-fungal shampoos to stop and prevent mild skin irritations. Similarly, coconut oil can reduce dry skin in dogs and avoid irritation.

However, if you notice your pet’s skin irritation, soreness and scabs are getting worse, you should visit your pup’s vet. They will diagnose your pet to ascertain the cause of the scabs and offer medical solutions and advice.


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