A 52-year-old woman with a 3-year history of recurrent vertigo, fluctuating hearing loss, and tinnitus is being evaluated. Which finding best distinguishes her Meniere disease from benign paroxysmal positional vertigo (BPPV)?

Explanation

## Meniere Disease vs. BPPV: Key Discriminator ### The Distinguishing Feature **Key Point:** **Fluctuating sensorineural hearing loss with aural fullness** is the hallmark that separates Meniere disease from BPPV. BPPV is a purely vestibular disorder with NO hearing loss, tinnitus, or aural fullness—these are the pathognomonic features of Meniere disease. ### Comparative Table | Feature | Meniere Disease | BPPV | |---------|-----------------|------| | **Hearing loss** | Fluctuating SNHL (early) → fixed | **Absent** | | **Tinnitus** | Present, fluctuating | Absent | | **Aural fullness** | Characteristic, precedes attack | **Absent** | | **Vertigo duration** | 20 min–several hours | 30 sec–2 min (brief) | | **Nystagmus type** | Spontaneous, horizontal/rotatory | Positional, rotatory (specific canal) | | **Dix-Hallpike** | Negative | **Positive** | | **Caloric test** | May show reduced vestibular response | Normal | | **Pathophysiology** | Endolymphatic hydrops | Otolith displacement | ### Clinical Pearl **Clinical Pearl:** The **triad of Meniere disease** is: 1. **Episodic vertigo** (spontaneous, not positional) 2. **Fluctuating hearing loss** (with tinnitus and aural fullness) 3. **Symptom-free intervals** between attacks BPPV lacks items 2 and 3 entirely—it is purely a vestibular disorder triggered by head position. ### High-Yield Mnemonic **Mnemonic: HEAR-M** (for Meniere disease distinguishing features) - **H**earing loss (fluctuating, SNHL) - **E**arliness of symptoms (aural fullness precedes vertigo) - **A**ural fullness (pressure sensation) - **R**ecurrent episodes with recovery - **M**id-to-low frequency loss on audiometry BPPV has **NONE** of these. ### Why Other Options Are Not Discriminating - **Positive Dix-Hallpike with rotatory nystagmus:** This is diagnostic of BPPV, not Meniere disease. However, the question asks what distinguishes Meniere disease, and the presence of hearing loss is more specific to Meniere. - **Duration of vertigo lasting 2–3 hours:** While typical of Meniere disease, this overlaps with other central causes and does not exclude BPPV in a patient with multiple episodes. - **Unilateral symptoms with normal caloric test:** Both conditions can present unilaterally; a normal caloric test does not confirm Meniere disease (caloric abnormalities develop later in disease course). **Warning:** Do not confuse the **positional nystagmus of BPPV** with the **spontaneous nystagmus** sometimes seen in Meniere disease. The Dix-Hallpike maneuver is diagnostic for BPPV but negative in Meniere disease. [cite:Harrison 21e Ch 428]