We know that not only sudden hearing loss but also other unilateral disorders, such as tinnitus or Meniere disease, occur more frequently in the left ear than in the right.
Statistics in the literature show sudden deafness, tinnitus, inner ear damage, and Meniere disease to be predominant in the left ear (10 to 20%).
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Anatomic variations may include the distortion of the membranous labyrinth in Meniere disease
, an enlarged vestibular aqueduct, and even dislodged otoliths; in the latter case, the fluid dynamics model complements current theories of BPPV.
The etiology of Meniere disease
is thought to be multifactorial, involving both genetic and environmental factors.
For example, in some patients, sudden deafness is followed by symptoms of Meniere disease
months or even years later.
Furthermore, patients may present with aural fullness, stuffiness, or pressure as a clinical precursor to cochlear hydrops or Meniere disease
While obtaining very careful histories from Meniere disease
patients over the years, we have found that BPPV is a common concomitant condition.
French physician Prosper Meniere first described Meniere disease
in 1861, and it remains a challenging entity that can vary from patient to patient and cause symptoms ranging from mild to disabling.
Labyrinthectomy is a last resort procedure to treat severe vertigo, usually in patients with Meniere disease
who have failed all conservative medical and surgical means of treatment, especially when the disease is predominantly unilateral.
Hosseinzadeh M, Hilinski JM, Turner WJ, Harris JR Meniere disease
caused by an anomalous vein of the vestibular aqueduct.
Herpes simplex virus antibodies in the perilymph of patients with Meniere disease
The effect of endolymphatic sac excision in Meniere disease