Dog Diseases – Dermatomycosis

Dog Diseases – Dermatomycosis

Dermatomycosis or surface mycosis refers to fungal diseases in which fungi infect the epidermis and its accessory structures (hair, horns, and claws).

There are many types of pathogenic fungi, but the main cause of canine skin mycosis is Microsporum canis. Sometimes Trichophyton mentagrophytes, Trichophyton verrucosa and Microsporum gypsum can also be isolated. Skin fungi are extremely resistant to external factors. Especially for dryness. When exposed to sunlight or below 0┬░C, it can survive for several months. The fungus attached to the dander on kennel utensils, toys, etc., can maintain its infectivity even after 5 years. However, the fungi in the bedding and soil can be eliminated by other biological factors. Only the younger gypsum-like microspore fungus and trichophyton mentagrophytes can reproduce in the soil.

The spread of canine dermatophytes is mainly through contact between animals or through contaminated objects. When the number of dogs is large and dense, it can also be spread through the air. Ectoparasites, such as lice, fleas, flies, and mites, are also of great significance in transmission. also. Both large and small house mice play a role in the spread of mentachophytosis, and the soil plays a certain role in the spread of gypsum-like microsporosis.

Diagnosis points

(1) The occurrence of epidemic-specific diseases and the extent of their harm often depend on the quality of individuals. Puppies and dogs with poor physical fitness. The symptoms are obvious and severe.

(2) Clinical features Mainly appear on the skin of the head, neck and limbs with round, broken hair bald spots, covered with gray scales. In severe cases, many ringworm spots are connected together. The course of the disease is longer. For typical cases, the diagnosis can be made based on clinical symptoms. In mild cases, if the symptoms are not obvious, disease materials must be taken, that is, some hair roots and scales should be scraped from the junction of the disease and health with a surgical knife or tweezers for microscopic examination.

Prevention

First, do a good job in the cleansing of the dog’s skin, and check the coat frequently for ringworm spots and scales.

Second, strengthen the management of dogs and avoid contact with sick dogs.

Third, if a sick dog is found, it should be isolated and treated in time. Griseofulvin 25-50 mg/kg body weight, taken orally in 2 to 3 times for 3 to 5 weeks, has a good effect on this disease. While using systemic therapy, shearing the affected part and applying nystatin or polyaldehyde nystatin sodium ointment can make the affected dog heal within 2 to 4 weeks.

Fourth, during treatment, special attention should be paid to the disinfection of kennel equipment and dog posts. 2% to 3% sodium hydroxide solution, 5% to 10% bleaching powder solution, 1% peracetic acid, 0.5% chlorhexidine solution, etc., all have good fungicidal effects and can be used.

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