The pathogenic characteristics and manifestations of canine mite disease

Canine mite disease is also called scabies, commonly known as "mangy dog ​​disease". This disease is a common and stubborn skin parasitic disease caused by mites parasitizing the sebaceous glands or hair follicles of dogs. Let’s talk about the pathogenic characteristics and manifestations of canine mite disease.

[Pathogen Characteristics]

The entire development process of dog mites occurs on the dog body, and the mites can also parasitize in lymph nodes and other tissues. The development process includes four stages: eggs, larvae, nymphs and adults. The nymphs are divided into three stages and can reproduce for one generation in 8-24 days.

In addition to developing and reproducing dog hair follicles and sebaceous glands, dog mites can also lay eggs in the ear canal, earwax and purulent secretions between the toes. It can be transmitted through contact between sick dogs and healthy dogs, or through the placenta of sick female dogs to puppies.

The disease is widely distributed and causes serious harm, mostly affecting puppies between 5 and 10 months old. Most sick dogs have systemic infections, and the severity of the disease is related to the body's resistance. Frailty, childbirth, and infection with other diseases will aggravate the occurrence and development of the disease.

[Symptoms]

When sick dogs become ill, hair loss will occur on the eyelids, around the lips, nose, lower part of the neck, elbows, between toes, etc., and round bald spots with extremely clear boundaries will appear on the skin. Mild flushing and silvery white sticky dandruff occur, and the skin is slightly rough or cracked with small nodules.

There is mild itching in the affected area, which may last for several days. These small nodules turn into blue-red pustules, which are discharged when pressed. They contain large numbers of Demodex mites and insect eggs. When the pus cells rupture, ulcers, scabs, and foul odor will form. In severe cases, hair may fall out all over the body, the skin may become thickened, and death may occur.

[Treatment method]

1. Disinfection and isolation

First of all, the living environment of the sick dog must be fully disinfected, and the sick dog must be isolated and treated.

2. Injection treatment

Use ivermectin for subcutaneous injection at a dose of 200ug/kg body weight.

To prevent infection, swab the affected area with iodine tincture with a concentration of 14%, and use antibiotics throughout the body to prevent secondary infection.