👀 Subtle spontaneous nystagmus? The head-shaking test is an essential clinical tool. This patient presented with mild vestibular symptoms, and spontaneous nystagmus was barely visible on initial inspection. After performing the head-shaking test (20 cycles at approximately 2 Hz), we were able to accentuate the underlying nystagmus, making it significantly easier to identify the pattern and laterality. 🔍 Why does this work? Head shaking fatigues the velocity storage mechanism and unmasks asymme

Positional nystagmus – is it BPPV? When it comes to assessing nystagmus during the Dix Hallpike maneuver, knowing how to interpret those patterns is key! Here’s your quick guide to confirming posterior canal BPPV: 🔎DIRECTION: Look for upward torsion toward the affected ear. ⏳ LATENCY: Notice the short delay before nystagmus kicks in. ⏰ TIME PATTERN: Watch for a brief burst following a crescendo-decrescendo rhythm. Check out how swiftly this nystagmus appeared and disappeared! This highlights th