In acute otitis, the eardrum is often acutely congested and swollen, and some patients may also have a localized blister-like bulge of the eardrum, and the patient may experience more intense ear pain. The patient should pay attention to keeping the ear canal clean and clear, avoiding water in the ear and eating a light diet. 5. After treatment, the patient should also pay attention to regular review and timely cleaning of the ear canal when inflammatory secretions appear.