The main symptoms of otitis media are: 1. hearing loss, enhanced self-hearing, and in the case of children, often dull reaction to sound and poor concentration. 2. Acute otitis media will have vague ear pain; chronic otitis media will have a feeling of occlusion or stuffiness in the ear. 3. Low-key intermittent tinnitus, especially when there is head movement or yawning or nose-blowing. 4. For purulent otitis media, there will be pus flowing in the ear, repeatedly, and in severe cases, mixed with bloody discharge. In addition, otitis media can sometimes have complications such as vertigo and headache. The dangers of otitis media: 1. Otitis media can cause yellow pus to flow out of the ear at any time, which is not only unhygienic for you, but can also seriously affect your image when others see it, causing you to have a strong sense of low self-esteem. 2. Repeated otitis media can lead to increased perforation of the eardrum and hardening of middle ear adhesions, causing further hearing loss. If medication is not used appropriately, it can also cause the nerve function of the inner ear to decline, making it more difficult to treat. 3. Middle ear infection can lead to bone ulcer type or cholesteatoma type otitis media, and the erosion of the bone may lead to facial nerve palsy, meningitis, brain abscess and other intracranial and extracranial complications, which may even be life-threatening.