What Causes Tinnitus in Both Ears?

If you notice abnormalities in your hearing—such as tinnitus (ringing in the ears) or a sensation of ear fullness or blockage—in daily life, it is important to pay attention. So, what causes bilateral tinnitus?

What Causes Bilateral Tinnitus?

Bilateral tinnitus has numerous potential causes, involving the outer ear, middle ear, and inner ear. Generally, tinnitus resulting from outer or middle ear disorders is relatively easy to treat. In contrast, bilateral tinnitus originating in the inner ear is typically due to dysfunction of the auditory nerve, often caused by microcirculatory disturbances—including ischemia, hypoxia, microthrombosis, or vasospasm—leading to impaired auditory nerve function. Conditions that disrupt microcirculation include cerebral infarction, cerebral arteriosclerosis, cerebrovascular spasm or stenosis, hypertension, and diabetes. Additionally, certain structural abnormalities of the inner ear may also cause bilateral tinnitus—for example, compression by an acoustic neuroma or enlargement of the vestibular aqueduct.

Bilateral tinnitus may also be triggered by otitis media. If you have previously suffered from otitis media, residual infection or trauma may lead to secondary tinnitus. Furthermore, tinnitus can be either intermittent or persistent. After symptom onset, patients commonly experience significant hearing loss and congestion in the ears and nose; some severely affected individuals may even develop dizziness.

Patients with bilateral tinnitus should maintain emotional stability, ensure adequate and high-quality sleep, adhere to regular daily routines, avoid staying up late or becoming overly anxious or irritable, and refrain from excessive emotional excitement—since such factors may disturb sleep and thereby exacerbate tinnitus symptoms. We hope this information proves helpful to you!