Dermatitis in dogs: Treatment instructions

Dermatitis disease does not seriously affect the dogs’ health. However, it makes dogs uncomfortable and causes itching and stink. Moreover, you never want to hug these dogs because they look very dirty.

A sign of dermatitis disease is that the dog’s skin turns pink or red and it is moist, hot, and sometimes purulent. It is able to treat dogs getting normal dermatitis. In contrast, it is very difficult to cure dogs getting severe Demodex dermatitis or you have to spend more money as well as time to do it.


You can recognize dog’s skin diseases through some signs on the surface of the skin. If the dog’s body appears with some black spots after being bathed for a while, you must pay more attention to this. First of all, you should check the dog’s skin for breaking out the rash, swelling, or losing hair. Discriminating black spots which are flea feces or not is essential. There are 2 reasons for black spots on a dog’s body: they are flea feces or they are signs of skin diseases. WewPet will share more information at the article below.

What Causes Dermatitis in Dogs?

There are many causes of dermatitis in dogs. A common cause of it is living of the external parasites on dog’s hair, skin, and ears. For example, these are ticks, fleas, lice, ear scabies caused by Otodectes cynotis, Demodicosis caused by Demodex canis and scabies caused by Sarcoptes. These parasites suck blood of the dogs and cause anemia, allergies as well as damage the dog’s skin. A secondary infection may develop and lead to purulent dermatitis. If you research carefully, it will help you take good care of your dog getting dermatitis as well as find out the most effective prevention of this disease.

  • External parasites: ticks, scabies, fleas, lice … Fleas, ticks, lice are living on the skin and hair of dogs. These parasites attack dogs by biting, sucking blood, making cells of the skin damaged and infected. Finally, they cause dermatitis in dogs which is very dangerous.
  • Environment: The dogs are not bathed carefully or infected due to contact with other pets having ticks and fleas. Dogs can be also infected with dermatitis from an external environment such as in playgrounds or lying down. Serious disease can increase the risk of spreading to humans.
  • Parasitic fungus: they damage immature and sensitive skin. They are especially common on the Pug dog, Fox Dog… with little hair because their skin is easily exposed to the environment.
  • Cross-infection: If mother dogs are infected with external parasites on hair and skin, it will quickly spread to the puppies during lactation. Besides, a dog with dermatitis will spread disease to a healthy dog ​​when they come into regular contact.
  • Gene.

Diagnose dermatitis in dog because of mite and flea

Signs of recognition

Recognizing is very simple. You just need to collect these black spots and drop them into water. Then observe that black spots begin to turn into a red spot or do not. Since flea’s food is blood, the flea’s feces are the blood fluid too. So you can conclude that these black spots are flea feces or not. 

Moreover, these black spots are usually concentrated in areas with thin skin such as the neck, ear rim. If skin in these areas appears to local red spots, you should treat your dog promptly.

Thanks to above methods, you find out that the black spots on the dog’s body are not the feces of the flea and these are not objects sticking to their bodies. So make sure that your dog is able to have skin problems. However, pieces of the skin on their bodies are not black. You need to take your dog to the veterinarian for a checkup.

Discovering these black spots really makes you get a headache. You should place your dog on a large white carpet, so during brushing, these black spots will fall out so that you will find out what the problem is.


Skin disease can cause itching and scratching in dogs. You need to prevent your dog from scratching face, body, or ears by feet. Because that can make wounds dangerously open. Moreover, they can even spread to other areas. You can also use a pet collar, and then take the dog to the nearest veterinarian so that he can help you handle them on time.

Diagnosis demodicosis and purulent dermatitis (Demodex Scabies)

Purulent dermatitis is common in long-haired dogs especially the Poodle dogs. It is difficult to take care of dogs having thick long hair. Furthermore, if the hair is not brushed regularly, it can be attacked by parasites. Ticks, lice and fleas bite and suck blood through skin that makes pets being damaged. The Demodex louse is extremely dangerous.

Signs of recognition

You can easily recognize some symptoms of dermatitis such as a lumpy hair, discharging pus. Your dog will feel itchy and often scratch infected areas by feet. The stink of your dog is characteristic. In worse situations, dog’s hair in the affected area is lost.

The infected position can be on the legs, ears or body. Dogs getting purulent dermatitis often feel very uncomfortable. They do not want anyone to touch that position. Because they feel painful and uncomfortable. This disease is very hydrophobic and easy to spread and it spreads quickly. A moist hair which is not dried can be the cause of the disease. Besides, the method of taking care of the dogs which is not safe is also one of the causes of disease.

  • Dermatitis in dogs caused by Demodex canis usually accounts for a high proportion. It appears early in young dogs on the first few days after being born. Because the puppies contact them directly with their mother. Dogs getting scabies caused by Demodex accounted for 26.94%. Demodex usually lives on the head and 4 legs of the dogs. The most common sign of it is that it is shedding around the eyes like glasses, so it is often called a dog wearing glasses. Initially, it is only local dermatitis. If it is not treated for a long time, there will be pus and inflammation, and then they spread to the whole body with an unpleasant odor.
  • The dog has a local demodicosis around the eye area.
  • Dogs getting Demodex dermatitis have symptoms such as itching, scratching, biting, so it is easy to damage their skin. In addition, hair loss, reddened skin, scaly thickened skin and dryness are also symptoms of this disease. Sometimes, yellow liquid is discharged and pus appears due to secondary infection of Staphylococcus bacteria.


To cure this disease, you need to patiently combine many different methods. Veterinarians will share with you some of the simplest and most economical ways. If the pet is mildly affected, it can be treated at home. Applying the medicine can make the dog feel painful, and then the dog can lick it off. It is useful to use a pet collar to prevent your pet from licking injuries.

  • Abstain from bathing your dog and do not touch infected skin. In the case of bathing, you need to use a special shower gel to treat dermatitis for dogs. You can buy it at pet stores that has introduced in the previous articles. 
  • Use a trimmer to shave on the affected area and surrounding. Remember to clean and disinfect trimmers and tools by vikkon after using.
  • Use a small amount of hydrogen peroxide (H2O2) on the swollen area to foam. Then wipe with a cotton ball, repeat 4-5 times until the skin is less red and become slightly white. Finally, dry it.
  • Apply povidone to disinfect this area. You can buy it at veterinary clinics or pharmacies. Do this twice per day, after 3-5 days, the skin will recover.
  • Leave the dog in the sun for 10-15 minutes. Choose when the sun is early at 8 – 9 am. Avoid from directly exposing your dog’s skin to strong sunlight which can cause burns and damage skin.

After the dog’s skin has healed, you can use a moisturizer to help its skin soften and provide vitamins to nourish, avoid leaving scars or having different hair color at treated skin. Abstain from feeding your dogs fishy, ​​raw, salty, sweet foods and chocolate because these are dangerous to your dog.

Diagnosis of a dog with Eczema Dermatitis

Signs of recognition

Eczema is an inflammation of the skin in dogs. The development of the disease follows separate stages, or relapsing is complex and lasts. Its features are rash, pustules and vesicles.

There are many causes of eczema in dogs: Allergies caused by contact with chemical, over-cleaning hair, biting and catching. Mosquitoes and parasites bite. Some drugs irritate the skin or skin is irritated by dirt. Living in a humid place, a lack of nutrients and other factors is one of the causes of the eczema.

Symptoms of eczema are rashes, papules, and vesicles. Scales appear on the skin and dogs become hot, painful and itchy. When it’s acute, the affected areas have another shape or have eczema erythema. Dogs and cats’ bodies will be terribly itchy in bad situations. 

Then there may be different symptoms such as pimples, vesicles. After that, these will burst, ulcer and scatter over the body with an unusual odor. During the development of illness, pets will feel itchy so they scratch. Friction created can cause inflammation. If dogs are not treated immediately, chronic symptoms will appear. The skin becomes dark, thick with larger and harder nodules between the skin markings.

In this chronic state, there can be other nodules or vesicles which discharge liquid as in previous stages. The development of the disease is divided into the above stages. Division between stages is not clear, it often crosses each other.


To treat eczema in puppies, except for eliminating the above risk factors, anesthesia can also be used. You can take the Dexamethasone with ratio 0.2 mg/kg, or acetate tablets with ratio 1.0 mg/kg, cut hair of the affected area, lightly apply a layer of ointment to let the skin loose.

To prevent skin from infecting, you can alternately use Erythromycin ointment. With purulent inflammatory cells, you can use Penicillin and Gentamicin to inject into muscle in order to prevent infection. In more severe cases, you can mix them and inject Dexamethasone twice a day.

Diagnose itchy skin due to allergies in dogs

After you’ve exactly diagnosed your dog with only common itchiness caused by allergies, you can ask veterinarians for methods to treat. There are many ways to treat that you can reference. However, it depends on the pet’s body and the conditions, the use of medication is different.


The first treatment of itchiness in dogs is Prednisone drug-containing steroid acids which can reduce itchiness and inflammation. The use of steroid acids is dangerous and can lead to side effects. For example, a dog’s kidney will fail if it takes this drug more for a long time. So please discuss with your veterinarian first.


The next step in treating itchiness in dogs is taking antibiotics or other methods to treat the infection. Because these dogs’ skin get so irritated that the wound opens and becomes infected. Pain relievers and ointments are only intended for decreasing pain and infection without tackling the cause of the problem or the cause of the itchiness.

Sunflower oil can be used to enhance immunity against factors causing allergy from daily contact with grass and plants. You should also clean your dog with a damp cloth after going for a walk to get rid of any factors that may harm your pet. Do not clearly shave your puppy. Dogs with long hair also have reasons. Even if it is extremely hot in the summer, you should only cut them shortly enough, you do not need to cut them all.

Change living environment

Altering some factors in the environment and diet including raw foods and supplements is often suggested to treat itchiness in dogs. Change your dog’s food into something containing high protein content and low in carbohydrates content. Carbohydrate content in ingredients is quite high, leading to obesity in dogs. However, having no carbohydrates and fat, your dog has to convert protein into glucose to get energy. As a result, dogs lack protein to provide for the cells and muscle.

Using shampoo containing medicinal ingredients or natural ingredients such as coal-tar, green tea essential oil and aloe vera are only temporary ways. You should only bath your dog once a month or even less. Some shampoos used to get rid of fleas can also spread wounds. In addition, many people ask each other what leaves were useful to cure for dermatitis in dogs? Many people say that bathing with tea leaves, guava leaves could cure this disease… However, this method is just temporary, it does not completely treat disease.

At this time, there is no statistical evidence of treatments which are really effective for itchiness in dogs. You should research carefully about certificates of these products. Remember that it is vital to discuss with your veterinarian about guidances and treatments of your dog’s disease effectively.

A combination of common dermatitis diseases in dogs

Common symptoms

You can easily observe these signs of dermatitis in dogs. When you recognize your dog having the following signs,  your dog is able to have dermatitis. Dogs getting mycosis outside usually have one-area clinical symptoms as the neck, legs, nails, nose, face. Redness in the head or ears, swelling or having pus on the skin, rough and scaly skin.

  • Dogs are itchy and irritated. Besides, dogs also scratch a lot and stop eating
  • Pale skin, thin body, rough skin
  • Severe hair loss, scabies, redness, scales …
  • Regularly lick and scratch the itchy areas
  • The whole body has an unpleasant odor

Medicines and treatments for dermatitis diseases in dogs

Treatments for dogs with normal dermatitis

  • Use a trimmer to cut the hair of the infected area. If there is no trimmer, you can use scissors instead. Cut the hair, and then extend to 4 directions, each extending about 2.5 cm around the infected area.
  • Mix hydrogen peroxide with water, soak a towel in the mixture, and then wipe the infected skin by this towel. After wiping once, you have to soak the towel into the mixture once. Do this until the dirt is removed from the infected skin and the blood is dry.
  • Take the antipruritic bottle and spray it onto the surface of the infected skin to reduce itchiness on 3 – 5 days of treatment.
  • Take a piece of non-stick tape, apply antibiotic ointment on one side, and then stick this side onto the infected skin.
  • Take a medical gauze and wrap twice, and then stick tape on it to fix the wound.
  • Get a safety collar to put on your dog. By doing this, even if it is itchy, the dog can not lick or bite the tape. If not using the neck, you can spray this area with bitter water to prevent the dog from licking this area. This type of water should be purchased at veterinary stores. After about 3-5 days, you peel off the tape and gauze, and you will see great results.

Note: During the course of treatment, if you find that the infected area has a lot of bleeding or the dog has a fever, take the dog to the veterinarian right away. Because it is out of your control.

Treatment for intensive dermatitis

  • Using Bivermectin 0.1% at a dose of 1ml/2.5 – 3kg body weight to inject under the skin once a week for 3 weeks. There are several species that are sensitive to Ivermectin so you cannot use it such as Collie, Australian Sheepdog, Bobtail, Shetland Sheepdog, Long-hair Whippet.
  • In addition, to treat effectively, it is recommended to combine with the Joyce & Dolls dog shower gel purchased at WewPet. After wetting all the dog’s hair, you apply the shower gel to the hair and rub them for 1-2 minutes. Leave it on for 5 minutes and then shower with water. Bath once a week. Be careful to prevent the gel from coming into contact with your dog’s eyes.
  • If the dog has purulent dermatitis, antibiotics must be used at a dose of 1ml/10kg of body weight to infect into muscle. Injection is repeated after 48 hours. In addition, you can add drugs BIO-AD3E, BIO-METASAL to help pets heal quickly.

How to prevent dogs from dermatitis

  • Keep skin clean by using shampoo or soap for dogs. Do not use soaps or bath gels for humans to bath your dog. Using it once a week to effectively prevent skin diseases and ectoparasites according to veterinarian’s guidance.
  • Use specific drugs to eliminate ticks, lice, fleas when you find out their presence on the dog’s body. You also should spray where dogs usually lie to eliminate ticks, fleas. Prevent them from re-infecting your dog’s hair.
  • Use drugs having the ability to treat both internal and external parasites.
  • Use more high-quality milk for dogs and cats to provide enough nutrients to improve their health. That also helps to keep the dog’s hair always smooth and healthy.

In particular, to completely treat dermatitis in dogs, you can ask your veterinarian for your dog’s diet. What food your dog should eat and what should not. Diet is also very important in preventing and treating diseases for pets. 

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