Introduction

Meniere's disease is a disorder of the inner ear characterized by episodic vertigo, fluctuating sensorineural hearing loss, tinnitus, and a sensation of aural fullness. The term "classic" refers to the full triad of auditory and vestibular symptoms occurring together in a recognizable pattern. This article presents a representative clinical case to illustrate the typical presentation, diagnostic workup, and management approach.

Case Presentation

A 45-year-old individual presented with a two-year history of recurrent attacks of severe rotational vertigo lasting 20 minutes to several hours. The episodes were accompanied by a feeling of pressure or fullness in the right ear, increasing tinnitus, and a noticeable reduction in hearing during the attacks. Between attacks, the patient reported that hearing tended to recover, though a persistent low-frequency loss gradually developed over time. The vertigo attacks were often preceded by a worsening of aural fullness and tinnitus, which served as a warning symptom.

Clinical examination during an asymptomatic interval was unremarkable. Neurological assessment revealed no focal deficits. However, audiometry demonstrated a right-sided sensorineural hearing loss, most prominent at low frequencies, with a fluctuating pattern documented on serial testing. Vestibular evoked myogenic potentials and caloric testing indicated reduced vestibular function on the affected side. Magnetic resonance imaging of the internal auditory meati was performed to exclude retrocochlear pathology, such as a vestibular schwannoma, and was normal.

Pathophysiology

The underlying mechanism is believed to be endolymphatic hydrops, an abnormal accumulation of endolymph in the membranous labyrinth. This distension may lead to ruptures or leakage of the endolymphatic compartment, causing recurrent episodes of vertigo and hearing fluctuation. While the precise etiology remains unknown, multiple factors including viral, autoimmune, genetic, and vascular influences have been proposed. The classic case described here fits the typical clinical picture, with no secondary cause identified on imaging or laboratory testing.

Diagnostic Criteria

The diagnosis is primarily clinical, based on the history and audiometric findings. Established diagnostic guidelines require at least two spontaneous episodes of vertigo lasting 20 minutes to 12 hours, audiometrically documented sensorineural hearing loss on at least one occasion, fluctuating aural symptoms (hearing, tinnitus, or fullness) in the affected ear, and exclusion of other diagnoses. This patient met all criteria for definite Meniere's disease.

Management and Treatment

Management is aimed at reducing the frequency and severity of vertigo attacks and preserving hearing. Initial conservative measures include dietary sodium restriction, avoidance of caffeine and alcohol, and symptomatic treatment for acute vertigo using vestibular suppressants. Prophylactic medications such as betahistine may be used in some regions, although evidence for efficacy is variable.

For patients with inadequate control, intratympanic corticosteroid injections are often considered. In more refractory cases, intratympanic gentamicin can be used to chemically ablate vestibular function, thereby reducing vertigo attacks but potentially worsening hearing loss. Surgical options such as endolymphatic sac decompression or vestibular nerve section are reserved for severe, disabling disease when medical and intratympanic therapies fail. In the presented case, the patient responded well to dietary modification and intermittent intratympanic dexamethasone, with a marked reduction in vertigo episodes and stabilization of hearing over an 18-month follow-up period.

Prognosis

The clinical course of Meniere's disease is variable. Some individuals experience spontaneous remission, while others develop progressive hearing loss and chronic imbalance. Bilateral involvement occurs in a minority of cases, often after many years. Early recognition and individualized treatment remain the cornerstone of improving quality of life.