Sudden deafness, acoustic neuroma, etc. can cause tinnitus, endocrine diseases, cardiovascular diseases, etc. can also cause tinnitus. 1. Sudden deafness: tinnitus occurs before and after deafness, tinnitus usually occurs a few hours after deafness, mostly buzzing, which can last for one hour or longer. 2. Auditory neuroma: progressive aggravation of tinnitus on one side, with varying pitch, mostly noisy sound, often accompanied by hearing loss, tinnitus may also be the only symptom in the early stage. 3. Other: hyperthyroidism, diabetes and other endocrine diseases, can cause tinnitus. Hypertension, atherosclerosis and other cardiovascular diseases, can cause tinnitus. Depression, anxiety, etc. can also cause tinnitus. There are many diseases that cause tinnitus, it is recommended to go to the hospital in time to identify the cause and timely treatment.