What is the cause of left ear tinnitus (ringing in the ear)?

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Last updated: April 16, 2025View editorial policy

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Differential Diagnosis for Left Ear Ringing

  • Single most likely diagnosis
    • Tinnitus: This is the most common diagnosis for ear ringing, which can be caused by exposure to loud noises, earwax buildup, or certain medications. It is a symptom rather than a disease and can be related to various underlying conditions.
  • Other Likely diagnoses
    • Meniere's disease: An inner ear disorder that involves vertigo, hearing loss, and tinnitus. The ringing in the ear can be a symptom of this condition.
    • Otosclerosis: A type of bone growth in the middle ear that can cause hearing loss and tinnitus.
    • Eustachian tube dysfunction: The Eustachian tube connects the middle ear to the back of the nose and throat. Dysfunction of this tube can lead to tinnitus among other symptoms.
    • Earwax impaction: Excessive earwax can cause irritation and lead to tinnitus.
  • Do Not Miss (ddxs that may not be likely, but would be deadly if missed.)
    • Acoustic neuroma: A non-cancerous tumor that grows on the cranial nerve running from the brain to the inner ear, affecting hearing and balance. It can cause tinnitus and is critical to diagnose early.
    • Temporal bone fracture: A fracture in the temporal bone can cause tinnitus, among other symptoms, and requires immediate medical attention.
    • Stroke or transient ischemic attack (TIA): Though less common, tinnitus can be a symptom of a stroke or TIA, especially if accompanied by other neurological symptoms.
  • Rare diagnoses
    • Lyme disease: In rare cases, Lyme disease can cause tinnitus among its wide range of symptoms.
    • Autoimmune disorders (e.g., rheumatoid arthritis, lupus): Certain autoimmune disorders can have tinnitus as one of their symptoms, though this is less common.
    • Ototoxicity from certain medications or chemicals: Some medications and chemicals can damage the ear and cause tinnitus. This is rare but can occur with specific exposures.
    • Vestibular schwannoma: Similar to acoustic neuroma but less common, it affects the vestibular nerve and can cause tinnitus.

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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