Common causes of otitis externa in dogs:

1. Cleaning the dog’s ears too frequently or roughly

Many dog ​​owners will Cleaning your dog's ears too harshly or too frequently. Improper cleaning can damage and stimulate epidermal cells, causing infection and triggering otitis externa in dogs.

2. Allergy

Dogs are allergic to food or certain things in the environment, such as pollen or grains, which can cause inflammation or itchy ears.

3. Environment

Humid weather, swimming, and foreign objects brought during walks in the woods or wild areas, if not dealt with in time, may lead to hidden dangers for ear problems.

4. Parasites

Ear mites may cause ear inflammation and itching, leading to secondary infection. If not treated properly, it can induce otitis externa.

5. Other medical problems

Suffering from other ear diseases such as tumors, adverse reactions to drugs, autoimmune diseases, ear skin keratinization or endocrine disorders may lead to ear diseases. The local environment changes and bacteria breed.

Common causes of otitis media in dogs:

1. Caused by bacterial infection

The common cause of otitis media in dogs is chronic bacteria Descending infections of otitis externa, such as Gram-negative bacteria.

2. Damage caused by foreign bodies

Foreign bodies inside cause perforation of the ear canal and tympanic membrane, leading to inflammation and secondary infection in the dog's middle ear. If the ear hair powder is often used by the feces remover, it can cause damage to the tympanic membrane, which will then dry out in the ear canal and cause secondary damage.

3. Caused by otitis media in the middle ear

When the secretion function in the dog's middle ear is abnormal, mucus in the ear will be overproduced, causing otitis media.