Ear itchy mite disease is caused by dog ear itchy mites of the genus Ear itchy mite. It is a common ear skin disease in dogs.
1. The cause of ear mites
1. The male body of the dog ear mites is 0.35-0.38 mm long, and there are two slender hairs at the end of the third pair of feet; the female body length is 0.46-0.53 mm. The fourth pair of feet is underdeveloped and cannot extend out of the edge of the body, which is 3 times shorter than the third pair of feet: the third and fourth pairs of feet have no suction cups.
2. Parasitizes in the external auditory canal of the dog and relies on piercing the skin to suck lymph and exudate, which results in irritation, inflammation and scab formation.
3. Sometimes due to secondary infection of bacteria, the lesions can penetrate deep into the middle ear, inner ear and meninges.
2. Clinical symptoms of ear itchy mite disease
1. Ear itchy mite parasitizes in the external ear of the dog, causing a large amount of ear lipid secretion and lymph fluid overflow. And often secondary to suppuration. There is an itchy feeling, and the sick dog keeps shaking his head, scratching his ears, and whining, rubbing his ears on the object, and even causing bleeding from the external auditory canal. Sometimes rotational movement is performed to the side where the lesions are more severe, and later the lesions may spread to the forehead and the back of the ear shell.
2. There are dark brown waxes and exudates in the ear canal, and sometimes phosphorus-like scabs.
3. If the meninges are invaded, the sick dog will have symptoms of madness.
4. When examining the ear canal with an otoscope, you can find that small white or flesh-colored ear mites move on dark brown exudates. Examining the exudates with a magnifying glass or under a low-power microscope can prove that they are canine ear mites.
5. When the symptoms are not obvious enough, you can use the scab on the affected skin to check whether there are insects.
3. Prevention and control measures for ear itchy mite disease
1. Inject less irritating oil (such as mineral oil or earwax dissolvers) into the ear canal, and then gently massage to help with cleaning, which can kill many mites.
2. Use a metal ring to remove a large amount of exudate that is tightly attached to the eardrum during the cleaning process.
3. Apply acaricide after cleaning: commonly used drip into the ear canal such as Connex, dimethyl phthalate, and protective oil matrix solution, once a day.
4. Dogs in severe cases should treat the whole body of the dog with parasitic drug powder or a medicine bath every day to kill mites that are not in the external auditory canal.
5. If there is an inflammatory lesion, apply hydrocortisone neomycin ointment to the inflammatory site until the inflammation subsides.