Treatment methods for canine otitis externa:

1. Before treating acutely ill dogs, the external auditory canal should be blocked with absorbent cotton balls, and then Zhou Tong’s coat should be cut off and treated with physiological Rinse the external auditory canal with saline, 0.1% hydrochloric acid, or 3% hydrogen peroxide.

2. For suppurative otitis externa, clean the ear canal with antibiotic cord ointment after cleaning as mentioned above. In severe cases, rinse 1 to 2 times a day and then apply ointment.

3. Dogs with obvious systemic symptoms can be treated with systemic antibiotics.

4. External ear drainage should be performed on sick dogs with deformed ear shells or tumors.

Characteristics of canine otitis externa:

1. In the early stage, only the external auditory canal is flushed, edematous and itchy, with light yellow serous secretions flowing out of the ear canal and contamination. The lower part of the ears is covered with hair.

2. Sick dogs appear restless, often shaking their heads, or rubbing and scratching their ears. As the disease progresses, local swelling intensifies, or pustules appear, and brown-black, foul-smelling purulent secretions flow out, often causing swelling at the base of the ears. The coat falls off or dermatitis occurs, and the sick dog's hearing decreases.

3. When it becomes chronic, it will get better and worse sometimes. Repeated attacks can cause tissue thickening in the ear canal and even tumors, leading to thickening of the auricle skin, auricle deformation and hearing impairment.