Neurogenic tinnitus, also known as sensorineural tinnitus, emphasizes the patient’s subjective perception. It refers to the abnormal sound sensation that occurs in people without any external stimulation conditions. Such as feeling monotonous or mixed loud sounds such as cicadas, buzzing, hissing, etc. in the ear. If the tinnitus is persistent, especially if it is accompanied by other symptoms such as deafness, vertigo and headache. It can be divided into sensorineural (originating from the cochlea), peripheral neural (originating from the auditory nerve) and central neural tinnitus. Etiology 1. Sensorineural tinnitus is the most common form of neurological tinnitus. 2. Peripheral neurogenic tinnitus The cause is not known, but it may be related to the degeneration of nerve fibers causing inter-fiber interaction transmission or slowing down of nerve fiber transmission. The distortion of the resting state when the auditory nerve fibers are discharged and the slowing down of the transmission of special nerve fibers can cause abnormal ignition pattern of nerve fibers to the brain, and tinnitus can appear. 3. Central neurogenic tinnitus often occurs in the ear with pre-existing or underlying peripheral hearing dysfunction, such as tinnitus after vagus or auditory nerve surgery. Tinnitus can also occur as a result of tension as a contributing or aggravating factor. Tinnitus can also occur in tumors, vascular anomalies, local inflammation, multiple sclerosis, and other conditions that invade the auditory pathways. Diagnosis 1. Take medical history Perform ear and body system examination. 2. Audiological examination Pure tone audiometry, acoustic impedance audiometry, tinnitus pitch and loudness matching test, tinnitus after-effect suppression and minimum masking level test, and other audiological and electrophysiological examinations. Treatment 1.Pharmacological treatment Vaso-dilating and nerve-nourishing drugs, anti-anxiety drugs, antidepressants, carbamazepine anticonvulsants, lidocaine and tranquilizers, etc. 2.Masking therapy Masking therapy is to use masking devices to generate a masking signal with a frequency similar to that of the patient’s tinnitus to mask and suppress tinnitus. When the masking sound is removed, the tinnitus will be reduced or disappeared, which is called “post-effective inhibition”. Hyperbaric oxygen therapy is a new treatment for tinnitus. Its principle is to increase the blood oxygen content, improve the damage to the auditory receptors due to hypoxia, and promote the recovery of the function of the cochlea and the auditory nerve. Hyperbaric oxygen therapy is not suitable for those who have an incompetent eustachian tube. 4. Psychological treatment Reducing anxiety, relaxing mood and paying attention to rest can improve tinnitus to a certain extent.