What Are Definite and Probable Ménière’s Disease Criteria?

Ménière’s disease is diagnosed clinically, meaning doctors rely on a specific pattern of symptoms, physical examinations, and hearing tests rather than a single confirming scan. The current diagnostic criteria—published as an international consensus in 2015 (including the Bárány Society) and adopted by the 2020 American Academy of Otolaryngology–Head and Neck Surgery (AAO-HNS) clinical practice guideline—divide the diagnosis into definite and probable Ménière’s disease ^[1][2].

The main difference between the two is that “definite” disease requires a very specific pattern of hearing loss to be officially documented on a hearing test, while “probable” disease is used when patients have typical attacks but haven’t yet had this specific hearing loss documented ^[1][2]. Receiving a “probable” diagnosis does not mean your symptoms are imaginary; it simply reflects that you do not yet meet the strict formal criteria, and the diagnosis may be updated if future hearing tests document the required changes.

Endolymphatic hydrops refers to an abnormal fluid-space change in the inner ear. It is an inner-ear finding often associated with Ménière’s disease, though its exact role and whether it directly causes the symptoms is not fully understood ^[3][4]. While hydrops is closely related to the condition, seeing this fluid buildup on a magnetic resonance imaging (MRI) scan is not required to make a diagnosis ^[3].

Definite Ménière’s Disease Criteria

To be diagnosed with definite Ménière’s disease, you must meet all of the following criteria ^[1][2]:

• Two or more spontaneous vertigo attacks: You must have experienced at least two episodes of spontaneous vertigo (a false illusion of motion or spinning, not clearly triggered by sudden position changes or movement). Each attack must last between 20 minutes and 12 hours ^[1][2].
• Documented hearing loss: A formal hearing test (audiogram) must show low- to medium-frequency sensorineural hearing loss in the affected ear ^[1][2]. “Sensorineural” means the loss involves the inner ear or hearing nerve, and “low- to medium-frequency” means it primarily affects lower-pitched sounds. This specific hearing loss can be recorded before, during, or after one of your vertigo episodes ^[2][5].
• Fluctuating ear symptoms: You must experience changes in hearing, tinnitus (ringing), or aural fullness (a feeling of pressure) in the affected ear ^[1][2].
• No better explanation: Your symptoms cannot be better explained by another vestibular or neurological condition ^[1].

Probable Ménière’s Disease Criteria

Probable Ménière’s disease is a category used when a patient has the hallmark symptoms of the condition but the characteristic audiogram findings have not been documented ^[1][2]. The criteria include:

• Episodic vestibular symptoms: You must experience two or more attacks of vertigo or dizziness, each lasting between 20 minutes and 24 hours ^[1][2].
• Fluctuating ear symptoms: Just like in definite disease, you must have fluctuating hearing, tinnitus, or ear pressure in the affected ear ^[1][2].
• No better explanation: As with definite disease, the symptoms cannot be better accounted for by another condition ^[1].

Quick Comparison: Definite vs. Probable

Where Does Endolymphatic Hydrops Fit?

Historically, doctors used an older category called “certain” Ménière’s disease, which required confirmation of hydrops by examining the inner ear tissue after a patient’s death ^[6][3]. Today, clinical diagnosis strictly relies on your symptom pattern, physical exam, and hearing tests; proof of hydrops is not necessary ^[3][4].

Specialized delayed-contrast MRI scans may visualize hydrops in some settings, but this is not a routine requirement ^[7][8]. An MRI showing hydrops is not considered definitive proof of Ménière’s disease, because hydrops can sometimes be seen in healthy people or in patients with other inner ear disorders ^[9][10]. Conversely, some patients who clearly meet the clinical criteria for definite Ménière’s disease do not show visible hydrops on an MRI ^[7]. Your clinician might order an MRI not to look for hydrops, but rather to ensure a structural issue isn’t causing your symptoms ^[11].

Ruling Out Other Conditions

A critical part of the diagnostic criteria is ensuring that another condition is not causing the symptoms ^[1]. Because the inner ear and brain balance centers are complex, many other issues can mimic Ménière’s disease. Doctors must assess for other potential causes, such as vestibular migraine (a migraine-related balance disorder), autoimmune inner ear disease, multiple sclerosis, or a vestibular schwannoma (a usually slow-growing benign tumor on the hearing-and-balance nerve) ^[1][12][11].

Importantly, this does not mean every patient requires testing for all of these conditions; testing is tailored based on your medical history, risk factors, and physical exam. Furthermore, conditions like vestibular migraine can actually overlap or coexist with Ménière’s disease, making it important to evaluate for both ^[1].