Which clinical feature best distinguishes Meniere disease from sudden sensorineural hearing loss (SSHL)?

Explanation

## Distinguishing Meniere Disease from SSHL ### Key Discriminating Feature **Key Point:** The **recurrent episodic nature with symptom-free intervals** is the hallmark that separates Meniere disease from SSHL. Meniere disease presents with distinct attacks separated by symptom-free periods, whereas SSHL is typically a single acute event. ### Comparative Table | Feature | Meniere Disease | Sudden SNHL | |---------|-----------------|-------------| | **Onset** | Episodic attacks (minutes to hours) | Sudden, single event | | **Duration** | 20 min–several hours per attack | Persistent from onset | | **Recurrence** | Recurrent with symptom-free intervals | No recurrence (static) | | **Vertigo** | Prominent, with nystagmus | Absent or minimal | | **Hearing loss pattern** | Fluctuating, low-frequency initially | Fixed, often mid-to-high frequency | | **Tinnitus** | Fluctuating, worsens before attack | May be present but stable | | **Aural fullness** | Characteristic, precedes attack | Absent | ### Clinical Pearl **Clinical Pearl:** Meniere disease is defined by the **Dizziness Guideline Committee criteria** requiring: 1. Two or more spontaneous episodes of vertigo ≥20 minutes 2. Audiometrically documented low-to-mid frequency SNHL on at least one occasion 3. Symptoms of aural fullness, tinnitus, or hearing loss in the affected ear 4. No other diagnosis explaining symptoms The **recurrent, episodic pattern** is mandatory for diagnosis. ### Why Other Features Are Not Discriminating - **Vertigo with nausea/vomiting:** Both conditions can present with vertigo; however, SSHL may have minimal or no vertigo. - **Low-frequency hearing loss:** While typical in Meniere, SSHL can also affect low frequencies; not specific. - **Unilateral SNHL:** Both conditions present with unilateral hearing loss; this is common to both. **High-Yield:** The **episodic, recurrent nature** with **symptom-free intervals** and **fluctuating hearing loss** is pathognomonic for Meniere disease and absent in SSHL. [cite:Harrison 21e Ch 428]