If a patient gets an attack of veigo by loud noise, he is having
**Core Concept**
Benign Paroxysmal Positional Vertigo (BPPV) is a condition characterized by brief, intense episodes of vertigo triggered by specific head movements or positions. It is caused by the displacement of otoliths (calcium carbonate crystals) within the inner ear, leading to abnormal stimulation of the vestibular apparatus.
**Why the Correct Answer is Right**
The correct answer is related to the mechanism of BPPV. When the head is moved in a specific way, the otoliths can become dislodged and stimulate the hair cells in the semicircular canals, leading to vertigo. This is often triggered by loud noises, which can cause a sudden movement of the head. The otoliths can also be dislodged by other movements such as rolling over in bed or getting up from a lying down position.
**Why Each Wrong Option is Incorrect**
**Option A:** This is not a correct option as there is no information provided to support this choice.
**Option B:** This is not a correct option as there is no information provided to support this choice.
**Option C:** This is not a correct option as there is no information provided to support this choice.
**Option D:** This is not a correct option as there is no information provided to support this choice.
**Clinical Pearl / High-Yield Fact**
It's essential to note that BPPV is a common cause of vertigo and can be diagnosed with the Dix-Hallpike maneuver. Treatment typically involves canalith repositioning procedures, such as the Epley maneuver.
**Correct Answer: D. BPPV**