Subcutaneous mites in dogs: symptoms and treatment

Dogs have more sensitive skin than humans, so they are much more susceptible to any skin conditions. These unpleasant symptoms are often caused by subcutaneous mites—parasites that feed on the blood and epithelial cells of their host. Subcutaneous mites, whether active within the body or invading from outside, can cause diseases such as demodicosis or scabies. Parasitizing under the skin, ticks actively reproduce and poison the animal's body with waste products, which is accompanied by unbearable itching, hair loss and can cause a severe allergic reaction. Furthermore, some species of subcutaneous mites can be transmitted to humans.

Signs of the disease

If a dog develops a subcutaneous mite, the symptoms and treatment of the disease depend on the type of pathogen:

• Demodicosis is caused by the opportunistic mite Demodex, which constantly lives in the sebaceous glands and hair follicles of animals, but wakes up and begins active life when the immune system is weakened;
• Scabies is an infectious disease that develops when a dog becomes infected scabies mites - sarcoptosis or notoedrosis (they are collectively called scabies mites), which gnaw characteristic paired tunnels in the skin.

Both pathologies have similar signs by which one can recognize the subcutaneous mite:

• very severe itching, causing the dog to scratch the affected areas until they bleed;
• hair loss, which first becomes noticeable on short-haired parts of the body (belly, groin, face, paws), and then bald spots appear everywhere;
• increased nervousness caused by incessant, excruciating itching;
• weakness, loss of strength, indifference to what is happening;
• significant deterioration of general condition, appearance of concomitant diseases.

The main difference is that the demodex mite manifests itself as point inflammation, while the scabies mite forms paired passages.

But since other symptoms of subcutaneous mites in dogs are typical for most cutaneous parasitic infestationsTreatment should only be prescribed after testing and determining the type of pathogen. To reduce itching until you see a veterinarian, you can give your dog an antihistamine.

Important! Demodicosis, scabies, and other skin diseases have largely similar symptoms, but require completely different treatments. Therefore, it makes no sense to attempt any treatment on your own without a proper diagnosis.

Types of subcutaneous mites

There are several types of mites that can infect dogs. However, in Russia, the most common are Demodex, Sarcoptic mange, and Notoedric mange.

Demodex

The Demodex mite inhabits the sebaceous glands and hair follicles of all mammals (animals and humans). However, dogs are genetically predisposed to developing demodicosis, so it is quite common in them. The disease develops when the dog's health deteriorates, caused by factors such as:

• disruptions in the immune system;
• hormonal imbalances;
• severe physical or mental stress.

Demodex mites show no symptoms if the dog is otherwise healthy. When triggered by these factors, the mite becomes active and begins to secrete toxins, which cause itchy, inflammatory patches in the form of red bumps. Particularly severe inflammation develops in areas where dead parasites accumulate. This inflammation quickly spreads throughout the body, usually accompanied by hair loss. If bald spots are absent, demodicosis is often mistaken for allergic itching.

Important! It is recommended to spay or neuter dogs that have recovered from demodicosis. Since the cause of the mite reactivation cannot be determined, it is important to rule out the influence of hormonal imbalances on the health of the offspring.

The disease has two forms: juvenile (in dogs under 2 years of age) and adult. However, only juvenile demodicosis has a favorable prognosis.

In addition, the pathological process can have 2 development options:

1. Localized is the most common form, accounting for 90% of diagnosed demodicosis cases in dogs. The lesion appears in a single, clearly defined area, with irritation, redness, and rapid hair loss. There are no secondary symptoms. It may resolve spontaneously without treatment within 15–20 days.
2. Generalized – the disease has multiple lesions. It rarely resolves without treatment, only if there are no complications.

In turn, localized demodicosis is of 2 types:

• pustular - occurs with the formation of purulent pustules, which are scratched by the dog, which can lead to infection entering the blood and its further spread throughout the body;
• scaly - causes the formation of small red spots covered with dry scales, which are also very itchy and the dog can introduce an infection into them when scratching, but it will manifest itself locally.

Generalized demodicosis combines both types simultaneously. You can see a photo of what a subcutaneous mite looks like in dogs with all types of demodicosis – the difference is very noticeable.

Scabies mites

The scabies mite penetrates the dog's skin from the outside and lives within it, feeding on epidermal cells. While a healthy immune system can prevent the disease from developing for a certain period, the animal is a carrier of the parasite and can even infect humans. However, symptoms are mild and resolve quickly, as these mites do not survive on human skin.

There are two types of scabies mites, depending on which one develops different types of scabies:

1. Classical mange is caused by the sarcoptic mange mite and is characterized by the same symptoms as demodicosis, but with the formation of inflammatory lesions early on. Chronic mange leads to keratosis, patches, and scarring.
2. Ear infection is caused by the notoedric mite, which infects the outer part of the ears but can spread to the croup and tail if the dog is used to sleeping curled up. The animal will vigorously hit its ears and head to relieve the itching, sometimes causing serious injury.

In general, the external manifestations of scabies in dogs are very similar to those of demodicosis. Therefore, distinguishing between the two without specialized testing is very difficult. To identify the pathogen, a scraping of the upper epithelial layer is taken under local anesthesia.

Treatment of subcutaneous mites in dogs

Treating demodicosis is much more difficult than scabies. To "deactivate" the demodex mite, the animal's entire body must be completely restored. However, to eliminate the scabies mite from dogs, treatment should only target the parasites, and then focus on boosting the pet's immunity.

Treatment of demodicosis

The difficulty of getting rid of Demodex is compounded by the fact that its cause is virtually impossible to determine. Therefore, it's essential to strengthen the dog's immune system and restore the organs affected by the parasite. The treatment plan should be as follows:

• to boost immunity – “Immunoparasitan” intramuscularly for 1 week in a dosage corresponding to the animal’s weight;
• for treating the affected areas - bathing and ointments with acaricidal action, which are selected depending on the severity of the lesion (at least 7 procedures with a repeat course after 1 week);
• to restore the liver - take Karsil tablets according to the instructions (other hepatoprotectors are not recommended, as they can have a positive effect on the tick’s condition, especially Essentiale);
• To relieve itching, take antihistamines and switch to a hypoallergenic diet (premium dry food and probiotics to prevent dysbacteriosis).

If the animal's condition is critical, Detomax is prescribed. It should be noted that these injections for subcutaneous ticks in dogs are very effective, but highly toxic and quite dangerous. Their use is appropriate when the benefits outweigh the existing risks to the dog's weakened body.

There are no other medications for demodicosis, including preventative ones. If there is a genetic predisposition, even with proper care, dogs may not be protected from the disease. Therefore, after recovery, such animals are removed from breeding.

Treatment of scabies

Scabies mites are eliminated using special acaricidal drops, which simultaneously kill the parasites and provide antifungal and antibacterial effects. Treatment is quite simple:

• the pathogens are destroyed by applying drops to the withers of the sick animal;
• in case of severe skin damage, the affected areas are additionally treated with antimicrobial drugs;
• In parallel, liver support (preferably with Karsil) and strengthening of the immune system are carried out.

Symptoms of a scabies mite infestation, such as itching, hair loss, and increased excitability in dogs, are also typical of allergic reactions. Moreover, they may be somewhat reduced by antihistamines if the owner chooses to treat the dog's allergies. However, this won't cure the scabies, and it will waste time—mites reproduce rapidly, and treatment is much more effective at the initial stage.

To know exactly how to treat subcutaneous mites in dogs, it's important to correctly identify the type of tick, as each type only responds to a specific type of medication. Therefore, a diagnosis should only be made by a doctor after conducting at least 2-3 scrapings if these symptoms appear.

For mild cases of scabies or early in the illness, you can alleviate your dog's condition with folk remedies. The following recipes are suitable:

1. Garlic tincture: Pour crushed garlic cloves into almond oil at a 1:2 ratio and let sit in a dark place for 3 days. Apply to the skin no more than once a day, as garlic is harmful to dogs.
2. Kefir tincture of black sulfur: dilute sulfur with kefir (1:3) and leave in a warm place for several hours. Apply to painful areas once a day, as the sulfur component is extremely drying to the skin, causing a severe burning sensation. For the same reason, do not leave the solution on the skin; rinse it off after application.
3. Sulfur ointment is a pharmacy product that is applied to the affected areas twice a day without rinsing. The ointment also causes a burning sensation.
4. Lavender oil – the skin is first lubricated with the oil, and after it has been absorbed, it is rubbed with chalk powder. This procedure is performed 4-5 times a day.

Despite the simplicity and effectiveness of home remedies, they should not be overused. These products can dry out your dog's skin and cause significant discomfort.

To prevent infestation of scabies mites, treat your pet with anti-mite drops twice a year. It's also important to provide your pet with a balanced diet and periodically administer immunomodulatory medications.

Subcutaneous mites are a very unpleasant and dangerous disease for dogs. Necessary measures should be taken at the first sign or even suspicion of the development of such pathologies. In the early stages, getting rid of parasites is much easier, as they have specific life cycles. If the disease is advanced, skin lesions can become very severe and painful for the animal, and treatment can last for many months. Furthermore, only a personalized, comprehensive approach to getting rid of subcutaneous mites in dogs, including treatment and overall health, can yield positive results.

You can also ask our website's staff veterinarian a question, who will answer them as quickly as possible in the comments box below.

Read also:

• How to remove a tick from a dog at home
• Tick ​​drops for dogs: which are the best?
• Demodectic mange in dogs