The danger of cholesteatoma is mainly that it will cause a series of symptoms, such as tinnitus, hearing loss, earache, pus in the ear canal, trigeminal neuralgia, facial paralysis, headache, vomiting, and impaired consciousness. 1. Tinnitus: Feeling of hissing sound in the ear. 2. Hearing loss: can’t hear others clearly. 3. Pus in the ear canal: pus discharge in the ear canal. 4. Trigeminal neuralgia: severe pain around the eyes, forehead and cheeks. 5. Facial paralysis: distortion of the mouth and eyes, increased drooling, and inability to perform even movements such as raising the eyebrows. 6. Headache: severe headache that is difficult to relieve. 7. Vomiting: projectile vomiting with stomach contents. 8. Impaired consciousness: manifested as drowsiness, lethargy, coma and so on. If cholesteatoma is diagnosed, timely consultation and standardized treatment are recommended.