What is the common cause of tinnitus in the left ear?

There are many reasons for tinnitus. The common causes are inflammatory reactions, such as acute otitis media and secretory otitis media. It may also be due to nervous tinnitus, such as auditory nerve problems in the inner ear, or space-occupying lesions of auditory nerve tumors and cerebellar peduncle. It may also be a head vascular problem, such as high jugular bulb or pulsating tinnitus. Some patients are caused by earwax embolism, that is, excessive earwax. Clinically, it is necessary to check the specific reasons first, and it is recommended to do otoscopy. If there is secretion or inflammatory reaction, it can be judged directly. If the otoendoscopy is normal, it is necessary to do a hearing test and head MRI to determine whether there are problems with hearing, inner ear and skull, and then make targeted treatment after clarifying the reasons.