Dog Fungal Skin Infection

icon September 4, 2023
by:puaintapets

Fungal skin infection, also known as Malassezia dermatitis or yeast dermatitis, is a common skin condition that affects dogs. It is caused by an overgrowth of a type of yeast called Malassezia. Malassezia is a naturally occurring yeast that can be found on the skin of dogs and many other animals, including humans, without causing any problems under normal circumstances. However, when there is an overgrowth of this yeast, it can lead to skin irritation, inflammation, and infection.

Yeast Infection in Dogs

Symptoms of Skin Fungal Infections in Dogs

Identifying a fungal infection in your dog can be challenging, as symptoms can vary depending on the severity of the infection and the dog's immune response. Common symptoms include:

  • Circular Patches: Circular areas of hair loss that appear red or inflamed at the edges and may be scaly in the center.
  • Itching: Dogs with fungal skin infections often scratch, lick, or chew the affected areas due to itching and discomfort.
  • Hair Loss: Patchy hair loss that can be localized or spread across different parts of the body.
  • Crusty or Scaly Skin: The infected areas might develop a crusty or scaly appearance, which can cause further irritation.
  • Redness and Inflammation: Inflammation and redness can be observed around the affected areas.
  • Brittle Nails: Fungal infections can also affect a dog's nails, making them brittle and prone to breakage.

Types of Fungal Skin Infections in Dogs

Some of the most common fungal skin infections in dogs include:

Malassezia Dermatitis (Yeast Infection): This is caused by the overgrowth of the Malassezia yeast on the skin. It can lead to itching, redness, inflammation, and a greasy or foul-smelling coat.

Ringworm (Dermatophytosis): Ringworm is a fungal infection caused by various species of dermatophyte fungi. It can cause circular, hairless patches with scaly edges. It's important to note that despite its name, ringworm is not caused by a worm but by fungi.

Blastomycosis: This fungal infection is caused by Blastomyces dermatitidis and is usually contracted by inhaling fungal spores. It can cause skin lesions, along with symptoms such as coughing, fever, and lethargy.

Histoplasmosis: This infection is caused by Histoplasma capsulatum and is also usually contracted through inhalation of fungal spores. It primarily affects the respiratory system but can also cause skin lesions.

Cryptococcosis: Cryptococcus spp. is a fungus that can affect the respiratory system and sometimes the skin. It's often contracted through inhalation of fungal spores.

Aspergillosis: While this fungal infection is more common in the respiratory system, it can also cause skin lesions in dogs, particularly those with weakened immune systems.

Yeast Infection in Dogs (Fungal)

What Causes Fungal Skin Infections in Dogs

Certain dog breeds with long hair or thick coats may have a genetic predisposition to fungal skin infections, as moisture can become trapped in their fur; additionally, dogs in humid or damp environments are more susceptible due to the favorable conditions for fungal growth. Poor hygiene practices, like inadequate grooming and infrequent bathing, increase the risk. Dogs with weakened immune systems, often caused by factors like age, stress, underlying health issues, or certain medications, are also more vulnerable to such infections.

Diagnosing Fungal Skin Infections in Dogs

A veterinarian can perform diagnostic tests such as skin scrapings, fungal cultures, and microscopic examinations to confirm the presence of a fungal infection and identify the specific type. For ringworm infections, a Wood's lamp might be used. This ultraviolet lamp can cause certain types of fungi to fluoresce, helping to identify areas of infection. In more severe or persistent cases, a small skin biopsy might be performed. Even Blood tests might be conducted, especially if the infection is suspected to have spread beyond the skin.

How to Treat Fungal Infection on Dogs Skin?

Most dogs with advanced or chronic yeast dermatitis are treated with a combination of oral and topical treatment.

Medical Treatment

  • Antifungal Medications: Your veterinarian will likely prescribe antifungal medications to address the infection. The specific medication and duration of treatment will depend on the type and severity of the infection. Common antifungal medications include ketoconazole, fluconazole, itraconazole, and terbinafine.
  • Topical Treatments: In some cases, topical antifungal creams, ointments, or spray may be recommended to directly treat affected areas of the skin. These products can help reduce fungal growth and soothe the skin. 
Puainta™ 癣/真菌感染-软膏

It contains metronidazole against most anaerobes, menthol for itch relief, and essential oil.
It works quickly and can be absorbed well.

How to use

Apply directly on the infected part, 3-5 times a day for 5-7 days. Use according to recommended dosage or as directed by veterinarians.

Bathing and Topical Care

  • Antifungal Shampoos: Medicated antifungal shampoos can help remove fungal spores from the skin and provide relief from itching and inflammation. Your veterinarian may recommend a specific shampoo to use during the treatment period.
  • Cleansing: Regular cleansing of the affected areas with a gentle, hypoallergenic cleanser can help keep the skin clean and prevent secondary infections. Avoid harsh or scented products that could further irritate the skin.

Anti-fungal shampoos usually contain specific active ingredients that are effective against fungal organisms. Some common active ingredients found in anti-fungal shampoos for dogs include:

  • Ketoconazole: This is a widely used antifungal agent that can be effective against a range of fungal infections, including yeast infections and ringworm.
  • Chlorhexidine: This is an antiseptic and antimicrobial agent that can help control fungal and bacterial infections on the skin.
  • Miconazole: Miconazole is an antifungal medication that can be used to treat fungal infections, including yeast infections.
  • Terbinafine: Terbinafine is another antifungal agent that can be effective against certain types of fungal infections.

These active ingredients are usually combined with other ingredients that can help soothe the skin, promote healing, and improve the overall condition of the dog's coat.

Environmental Management

  • Isolation: If the fungal infection is contagious (such as ringworm), consider isolating the affected dog from other pets to prevent the spread of the infection.
  • Cleaning: Thoroughly clean the dog's living environment, including bedding, toys, and grooming tools, to minimize the risk of re-infection.

Nutrition and Immune Support

  • Balanced Diet: Providing a balanced and nutritionally complete diet can support the dog's overall health and immune system, which is important for combating infections.
  • Supplements: In some cases, your veterinarian might recommend immune-boosting supplements to help the dog's body fight off the infection. Common immune-boosting ingredients in supplements include vitamins (such as vitamin C and vitamin E), minerals (like zinc and selenium), and certain herbs or botanicals that are believed to support the immune system. Some supplements also contain omega-3 fatty acids, which can have anti-inflammatory effects.

A variety of vitamins, minerals, and micronutrients are well-balanced to support your pets’ pets health.

Ingredients

Fish oil, Egg yolk powder, Chicken meal

Conclusions

 

It's important to note that the treatment approach will vary based on the specific fungal infection, the dog's health condition, and the severity of the infection. Some fungal infections can be stubborn and require several weeks or even months of treatment. Always follow your veterinarian's guidance and complete the full course of treatment to ensure the infection is properly eradicated. Additionally, consult your veterinarian if you notice any adverse reactions to medications or if the condition worsens despite treatment.

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