Los Angeles Motor Scale (LAMS)
Facial weakness (0–1), arm drift (0–2), grip strength (0–2). Total 0–5; many prehospital teaching pathways flag ≥4 as higher concern for large vessel occlusion.
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How it works
LAMS is a brief motor-focused scale used alongside other stroke severity tools to screen for possible large vessel occlusion.
Limits
Does not replace NIHSS, vessel imaging, or institutional triage thresholds; performance varies by population and prehospital setting.
Educational tool only—not for diagnosis or treatment decisions.