The tool designed for assessing Ménière's disease criteria evaluates specific clinical inputs to determine if a person meets either the definite or probable criteria for the condition. Here's how the evaluation process unfolds:

The user needs to provide responses to four sets of criteria:

- **Episodes Duration**: This consists of two options, where a user selects whether they have experienced:
  - At least 2 spontaneous episodes of vertigo, each lasting from 20 minutes to 12 hours.
  - At least 2 episodes of vertigo or dizziness, each lasting from 20 minutes to 24 hours.

- **Aural Symptoms**: The user confirms the presence of fluctuating aural symptoms, such as changes in hearing, tinnitus, or ear fullness, in the affected ear.

- **Audiometry Findings**: The user verifies audiometric documentation showing low-to-medium-frequency sensorineural hearing loss in one ear. This loss should be recorded at least once before, during, or after a vertigo episode.

- **Differential Diagnosis**: The user ensures that the symptoms are not better explained by another vestibular diagnosis.

The tool processes these inputs with a decision-making strategy:

- If a user reports having at least 2 spontaneous vertigo episodes with specific durations (20 minutes to 12 hours), confirms fluctuating aural symptoms, presents with audiometrically documented hearing loss, and rules out other vestibular diagnoses, their case is classified as "Meets criteria for definite MD."

- If a user indicates a broader timeframe for vertigo or dizziness episodes (20 minutes to 24 hours), confirms fluctuating aural symptoms, and rules out other vestibular issues with no additional auditory conditions, their case is delineated as "Meets criteria for probable MD."

- If neither of these condition sets are met, then the result is "Criteria not met."

This approach integrates user responses with established Ménière's disease diagnostic criteria, using logical assessments to align symptoms with either a definite or probable diagnosis classification.

The International Classification of Vestibular Disorders (ICVD) criteria for Ménière's disease is a diagnostic tool designed to accurately identify and classify cases of Ménière's disease. This clinical tool is particularly useful in distinguishing Ménière's disease from other vestibular disorders, thereby guiding appropriate treatment and management strategies.

The ICVD criteria for Ménière's disease primarily consists of four components: episodes duration, aural symptoms, audiometry findings, and differential diagnosis. The episodes duration component requires either two or more spontaneous episodes of vertigo each lasting 20 minutes to 12 hours, or two or more episodes of vertigo or dizziness each lasting 20 minutes to 24 hours. The aural symptoms component necessitates the presence of fluctuating aural symptoms such as hearing loss, tinnitus, or fullness in the affected ear. The audiometry findings component requires audiometrically documented low-to-medium-frequency sensorineural hearing loss in the affected ear on at least one occasion before, during, or after one of the episodes of vertigo. Lastly, the differential diagnosis component ensures that the symptoms are not better accounted for by another vestibular diagnosis.

The ICVD criteria for Ménière's disease provides a classification of "definite" or "probable" Ménière's disease. A diagnosis of definite Ménière's disease is made if the patient meets criteria A, C, D, and E. A diagnosis of probable Ménière's disease is made if the patient meets criteria B, C, and E. If the patient does not meet these criteria, then a diagnosis of Ménière's disease is not made according to the ICVD criteria.