Dizziness: Approach to Evaluation and Management.

Area of Science:

• Neurology
• Otolaryngology

Background:

• Dizziness is a common, imprecise symptom with traditional classifications lacking clinical utility.
• Patients struggle to describe dizziness quality but can identify timing and triggers more reliably.

Purpose of the Study:

• To clarify diagnostic approaches for dizziness.
• To differentiate peripheral from central etiologies of dizziness.
• To guide appropriate treatment strategies for various dizziness causes.

Main Methods:

• Clinical history focusing on symptom timing and triggers.
• Physical examination including orthostatic vital signs, cardiac and neurologic assessments.
• Specific bedside tests: HINTS (head-impulse, nystagmus, test of skew) examination and Dix-Hallpike maneuver.

Main Results:

• Episodic vertigo with head motion suggests benign paroxysmal positional vertigo.
• Vertigo with unilateral hearing loss indicates Meniere disease.
• Episodic vertigo without triggers may signal vestibular neuritis.
• The HINTS examination effectively distinguishes peripheral from central causes.
• Laboratory tests and imaging are generally not required or helpful.

Conclusions:

• Peripheral dizziness etiologies are typically benign, while central causes often necessitate urgent intervention.
• Accurate diagnosis through targeted history and physical exam, including the HINTS exam, is crucial.
• Specific treatments exist for common peripheral conditions like benign paroxysmal positional vertigo, Meniere disease, and vestibular neuritis.