1. Scabies mites

This disease is mainly a parasitic disease caused by cat anal mites parasitizing in the cat's skin. This disease often occurs mainly on the cat's ears, face, eyelids and neck. The affected area suffers from severe itching, hair loss, red skin, rash-like nodules, and yellow scabs on the surface. In severe cases, the skin becomes thickened and cracked. Sometimes the lesion develops secondary bacterial infection and suppuration. The most common areas of infection by scabies mites are hairless or short-haired areas (ear wings, armpits, limbs, and abdomen). In some cases of infection, weight loss occurs due to persistent itching and inability to rest. Inexplicably, even in animals with extremely strong allergic reactions, very few scabies mites are detected. One study showed that infected animals develop large amounts of antibodies but then return to normal after treatment. Although the incidence is not high, well-groomed and cared for cats will occasionally develop scabies mite infestations. The animals will be itchy but have no clinical symptoms and respond well to scabies treatment.

For cats allergic to mites, we can cut off the coat of the affected area and its surroundings in advance, and then soak the scabs to soften them. To remove the scab, you can apply potassium soap, 10% coal tar glycerin solution, coal phenol glycerin or carbolic acid glycerin, etc.; or after the scab softens (12 to 24 hours), wash it with warm fertilizer soap solution, and then use 0.5% dichlor Insect liquid, scrub the affected area, and repeat the treatment once or twice every 7 days; or apply lime-sulfur mixture on the affected area (160g of quicklime, 240g of sulfur, 360m1 of water). First pour an appropriate amount of water into the quicklime, stir it into a gruel, and then add Mix and stir the sulfur. While heating, gradually add water. After pouring out the water, boil for 1 to 2 hours until it turns amber and becomes clear.); or use benzyl benzoate and fully rub the affected area every day or every 3 days; or Apply Conix to the affected area. Griseofulvin has been reported to be used successfully as a systemic treatment.

　2. Ear mites

Cat ear mites are caused by ear itch mites and ear scabies mites, and are highly contagious parasitic diseases. Male ear worms are 0.32 to 0.35 mm long, and female worms are 0.43 to 0.48 mm long. It has 4 pairs of legs and is an arthropod with incomplete metamorphosis. Ear itch mites live on the surface of the cat's ear canal skin and do not enter the inner layer of the skin. They have a tough horny epidermis and are highly resistant. It sucks lymph fluid and skin cells, relies on tissue residues and tissue nourishment, and can survive for more than 2 months at 6 to 8°C and air humidity of 85% to 100%. The development process includes four stages: egg, larvae, nymph and adult.

Cats infected with ear mites will develop type 1 allergic reactions. The parasite feeds on epithelial debris and epidermal tissue fluid, irritates the ear canal tissue, and accumulates earwax, blood clots or parasite excretion in the ear canal - giving the earwax its characteristic brown appearance. If animals eat this earwax while eating, it may also trigger an immune response. Clinical signs of infection in cats vary from mere appearance of large amounts of skin debris to severe itching of the ears. cat earsMite treatment has been mentioned in several articles and will not be detailed here.

　3. Chiggers

The clinical symptoms of cats infected with chiggers are variable. Some animals may not show any signs, but some may develop severe itchy dermatitis. Cats' habitual grooming behavior makes it difficult to find parasites during inspection. Post-infection lesions mostly appear on the dorsal side, presenting as dry, scaly dermatitis. As the disease progresses, the scaliness may become more severe and spread throughout the body.

　4. Tick allergy

Ticks are also called ticks, grass crawlers, and dog beans. If you find that your cat has been bitten by a tick, do not remove it yourself and go to the hospital to remove it immediately. The doctor will disinfect the area around the wound, anesthetize the tick on the wound, wait until the tick is completely anesthetized, and then use a twister to easily remove it. When the tick burrows its head into the skin, the hook on the head becomes tighter and tighter. If it is taken out by itself, it is easy to leave the head in the skin and continue to infect. It is extremely troublesome to go to the hospital to get the head removed. If you are bitten by an insect, you cannot kill the insect immediately. You should blow it away or the poison will be greater.

The areas where ticks bite and adhere appear as granulomatous nodules (not necessarily red and swollen), itching and ulcers. At the same time, the area where the tick is attached may also suffer from local ulcers or necrosis; occasionally it may cause itchy foot dermatitis.

Cats infected with ticks can also cause other diseases: for example, the neurotoxins released by ticks can cause paralysis in cats; in addition, ticks are intermediate hosts of a variety of blood parasites and can transmit ehrlichiosis or Rocky Mountain spotted fever. , pyroptosis and other blood diseases. Severe cases can cause death of animals.