Meniere’s syndrome, also known as vagal effusion, is a condition that results in episodes of vertigo, tinnitus, deafness, and swelling and pain in the head due to an accumulation of fluid in the membrane vagus of the inner ear. Meniere’s syndrome is common in middle-aged people and is mostly unilateral in the beginning, but can develop bilaterally in 9-14% of patients as the disease progresses. The cause is unknown, and many scholars believe that it should belong to the category of physical and mental disorders. In Meniere’s syndrome, the main symptom of onset is vertigo. In 1861, French doctor P. Ménière published four articles on vertigo, describing the clinical symptoms in detail. Later scholars named it as Meniere’s syndrome when the above symptoms occurred repeatedly. In 1938, Halpik and Cairns discovered that the pathology of this disease was fluid accumulation in the membrane vagus, and later on, some people confirmed this pathological change, thus confirming it as a disease. In general, clinical workers used to call all vertigo diseases with no identifiable cause as Meniere’s syndrome, which led to conceptual confusion. In 1972, at a conference on balance, it was decided that vertigo, deafness, and tinnitus caused by fluid in the membranous vagus would be named as Meniere’s disease. Over the years many books and journals have also used membranous vagal effusion as a synonym for Ménière’s disease. It has also been pointed out that congenital syphilis, viral and bacterial infections can also cause membranous vagal effusion, so it is advocated to abolish membranous vagal effusion as a synonym for this disease unless it is crowned with primary membranous vagal effusion.