The neurologic implications of tinnitus

Area of Science:

• Neurology
• Otolaryngology
• Neuroscience

Background:

• Chronic tinnitus is a common auditory complaint.
• The relationship between tinnitus and central nervous system (CNS) disease is not fully understood.
• Previous studies suggest a potential link between tinnitus and neurologic conditions.

Purpose of the Study:

• To investigate the prevalence of associated neurologic lesions in patients with chronic tinnitus.
• To determine if tinnitus can be an early indicator of CNS disease.
• To assess the necessity of comprehensive neurologic evaluations for tinnitus patients.

Main Methods:

• One hundred twenty-one patients with chronic tinnitus underwent routine otologic and extensive neurologic evaluations.
• Neurologic assessments included computed tomography (CT) with special views of the posterior fossa.
• Data were analyzed to correlate tinnitus with identified neurologic findings.

Main Results:

• Twenty-one percent of patients had neurologic disease identified as a likely cause of tinnitus.
• An additional twenty-three percent had associated neurologic problems, though a direct causal link to tinnitus was uncertain.
• Some patients presented with unrelated neurologic or psychiatric conditions.

Conclusions:

• A significant incidence of neurologic disease was found in association with chronic tinnitus.
• Chronic tinnitus often serves as an early warning sign for underlying CNS disease.
• Rigorous neurologic evaluation is warranted for all individuals experiencing chronic tinnitus, irrespective of tinnitus characteristics.