Which of the following are characteristic features of Meniere’s disease?
The question asks for characteristic features. The options are A, B, C, D, but they're not filled in. Hmm, the user probably left them blank as a placeholder. Anyway, the correct answer is likely to include episodic vertigo, sensorineural hearing loss, tinnitus, and a feeling of fullness in the ear. These are the classic triad or tetrad symptoms.
Wait, the core concept here is the pathophysiology. Meniere's is associated with endolymphatic hydrops, which is an excess of endolymph in the inner ear. This leads to pressure changes and affects the vestibular and cochlear functions. So the symptoms are due to the mechanical disruption of the inner ear structures.
Now, for the correct answer explanation. The features would be vertigo attacks lasting hours, fluctuating hearing loss, tinnitus, and aural fullness. These are the key points. The other options might include things like nystagmus, which is present but not a defining feature. Or maybe other causes of hearing loss like conductive, which isn't what Meniere's causes.
The incorrect options could be things like sudden hearing loss (which is different), or features of other vestibular disorders like benign paroxysmal positional vertigo (BPPV), which has brief episodes and positional triggers. Also, maybe options that mention other symptoms like fever or neurological signs, which aren't part of Meniere's.
Clinical pearl: Remember the triad—vertigo, tinnitus, hearing loss. Also, the hearing loss is sensorineural and progressive. Another point is that diagnostic criteria often require at least two episodes of vertigo lasting 20 minutes or more. Oh, and the aural fullness is a key differentiator from other causes.
Putting it all together, the correct answer should list those four symptoms. The other options would be incorrect because they either don't fit the symptom profile or are part of other conditions. Need to make sure the explanation is concise and hits the key points without getting too detailed.
**Core Concept**
Meniere’s disease is a chronic inner ear disorder characterized by **episodic vertigo**, **sensorineural hearing loss**, **tinnitus**, and **aural fullness**. It results from **endolymphatic hydrops**, causing fluctuating pressure in the endolymphatic compartment.
**Why the Correct Answer is Right**
The classic triad includes **vertigo attacks lasting ≥20 minutes**, **low-frequency sensorineural hearing loss**, and **tinnitus/aural fullness**. Pathologically, endolymphatic hydrops disrupts vestibular and cochlear function, leading to these symptoms. Vertigo arises from pressure changes in the semicircular canals, while hearing loss reflects damage to the cochlear hair cells.
**Why Each Wrong Option is Incorrect**
**Option A:** Sudden, profound hearing loss is seen in **sudden sensorineural hearing loss (SSNHL)**, not Meniere’s.
**Option B:** Positional vertigo (e.g., BPPV)