The causes of tinnitus are: 1. Systemic diseases When kidney disease, liver and gallbladder disease, diabetes, tuberculosis, chronic bronchitis, etc. lead to systemic dysfunction, tinnitus symptoms often appear, which are characterized by the same high-pitched, bilateral nature as tinnitus caused by drug intoxication. This tinnitus usually disappears with the recovery of the above mentioned diseases. In addition, some data suggest that tinnitus may be a precursor of coronary heart disease. According to statistics, among patients with coronary heart disease who have tinnitus, 86.7% of them have tinnitus before angina, and 8.6% of them have angina and tinnitus at the same time. This is because the cochlea is more sensitive to ischemia and hypoxia. Experts point out that tinnitus can be an important sign of early heart disease. Therefore, a middle-aged or elderly person who originally had no tinnitus symptoms and suddenly developed tinnitus in the near future should have his blood lipids, blood pressure and electrocardiogram checked promptly to clarify whether he is suffering from hidden heart disease. Some people who have had tinnitus for a long time, but if it has worsened recently, they should also have their heart checked. 2. Weakness This kind of tinnitus mostly has no organic lesion and is often caused by insufficient vascular tone and poor local blood supply. According to Chinese medicine, it is a manifestation of kidney deficiency. 3, neurasthenia This kind of tinnitus has variable pitch, mostly bilateral, and is often accompanied by headache, dizziness, insomnia, and dreaminess. This kind of tinnitus is also related to depression, and adjusting emotions can make it better. 4. Patients with ear disorders mostly have a history of ear disease, and tinnitus tends to worsen at night. Depending on the location of the lesion, it is divided into conductive tinnitus and sensorineural tinnitus. Conductive tinnitus can occur when there is cerumen, foreign body, inflammation and swelling in the outer ear, eardrum congestion, entrapment, perforation, middle ear effusion or infection, or otosclerosis. This type of tinnitus often occurs on the side of the lesion and has a low pitch, such as “rumbling”, “booming”, or “buzzing”. The inner ear cochlea is the sound-sensitive part of the ear. If there is an inner ear concussion, edema, or auditory neuroma, it will stimulate the inner ear cochlea to produce tinnitus. This kind of tinnitus is mostly bilateral, with a high sound, such as cicada or hissing sound, and the tinnitus is often intermittent. 5. When neck tumors or other neck diseases compress the carotid artery, it can cause tinnitus on the compressed side. Tinnitus is characterized by persistent, low-pitched sound, and the degree of tinnitus may change with changes in body position. 6. Drug poisoning damages the nerves in the inner ear High doses of quinine, quinidine, chloroquine and other drugs can cause severe tinnitus, but it will get better after stopping the drug and mostly does not affect hearing. Drugs such as gentamicin, streptomycin and kanamycin, which damage the auditory nerve and vestibular nerve, can cause tinnitus, which can rapidly develop into deafness and be difficult to recover if the drug is not stopped in time. Tinnitus caused by drug allergy or poisoning is often high pitched and bilateral. In addition, menopausal syndrome can also cause tinnitus, especially in those who do not sleep well. However, there are a few patients with tinnitus of unknown etiology who need regular observation and examination. In particular, patients with unilateral high-pitched tinnitus should go to the neurology and quintuplegia departments of regular hospitals for regular checkups in order to get accurate and timely diagnosis and treatment.