There are many causes of tinnitus, such as infection and trauma to the middle or inner ear, central nervous system diseases, systemic diseases, noise damage, and mental factors. 1. Tinnitus can be induced by middle ear or inner ear infections and trauma, such as otitis media, otitis externa, inner ear infections, Meniere’s disease and so on. 2. Diseases of the central nervous system, such as multiple sclerosis, tumors, vascular lesions and so on. 3. Systemic diseases, such as anemia and hypertension. In addition, women’s menstrual period can also appear tinnitus. 4. Noise damage: such as explosions, or prolonged exposure to noise, etc. can occur tinnitus. 5. Mental factors: mental stress, or overworked brain can also be tinnitus. When tinnitus occurs, you should go to the hospital in time to get a clear diagnosis and standardized treatment.