Work out stroke scale (nihss) instantly with clear inputs, formula shown and shareable results.
Adds the eleven NIH Stroke Scale item scores and maps the 0 to 42 total onto the conventional severity bands.
NIHSS bands
0 no symptoms; 1-4 minor; 5-15 moderate; 16-20 moderate to severe; 21-42 severe
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
It quantifies deficit severity, informs thrombolysis and thrombectomy decisions and tracks change over time.
No. It under-represents posterior circulation strokes, where large deficits can score low.