Which condition is most commonly diagnosed using the Dix-Hallpike test?

Which condition is most commonly diagnosed using the Dix-Hallpike test?

• A. Benign paroxysmal positional vertigo
• B. Vestibular neuritis
• C. Meniere disease
• D. Labyrinthitis

Answer: (A)

Dix-Hallpike is the go-to test for diagnosing benign paroxysmal positional vertigo, especially caused by crystals in the posterior semicircular canal. When a person with this condition is moved from sitting to a supine position with the head turned and extended, the displaced otoconia briefly trigger vertigo and produce a distinctive torsional upbeating nystagmus toward the affected ear. The vertigo has a short latency and tends to fatigue with repeated testing, which helps confirm the diagnosis. This test is most useful because BPPV is the most common cause of vertigo, and the specific positional maneuver directly provokes the underlying mechanism. In contrast, vestibular neuritis causes sudden, continuous vertigo without a consistent positional nystagmus pattern, while Menière disease and labyrinthitis involve episodic vertigo with hearing loss or tinnitus, not the characteristic positional response seen with Dix-Hallpike.

Dix-Hallpike is the go-to test for diagnosing benign paroxysmal positional vertigo, especially caused by crystals in the posterior semicircular canal. When a person with this condition is moved from sitting to a supine position with the head turned and extended, the displaced otoconia briefly trigger vertigo and produce a distinctive torsional upbeating nystagmus toward the affected ear. The vertigo has a short latency and tends to fatigue with repeated testing, which helps confirm the diagnosis. This test is most useful because BPPV is the most common cause of vertigo, and the specific positional maneuver directly provokes the underlying mechanism. In contrast, vestibular neuritis causes sudden, continuous vertigo without a consistent positional nystagmus pattern, while Menière disease and labyrinthitis involve episodic vertigo with hearing loss or tinnitus, not the characteristic positional response seen with Dix-Hallpike.