If unilateral deafness occurs, the following aspects are mainly considered: 1. It is likely to be neurological deafness. It may be that the patient has poor blood circulation in the inner ear or insufficient blood supply to the cervical spine or brain, which may easily trigger the formation of unilateral deafness. In some cases, sudden anxiety or fire can also trigger neurological deafness. 2. If the patient has inflammation inside the unilateral ear, such as acute otitis externa or acute suppurative otitis media, unilateral deafness may also be easily formed. 3. If the patient has cerumen embolism inside one ear, it may also easily affect hearing. Regardless of which of the above causes is responsible, it is important to actively check and further treat the symptoms at the same time, so that the patient’s unilateral deafness can be significantly improved.