Neurology
NIHSS (Simplified)
Stroke severity — 11-item National Institutes of Health Stroke Scale.
NIHSS (Simplified) calculator
Result
0/42
No stroke
How to use it
- 1
Train on NIHSS. Score must be performed by trained provider. Online certification available (nihsscertification.nih.gov).
- 2
Best performance. Motor: hold position 10 sec (arm) / 5 sec (leg) before scoring drift.
- 3
Document serially. Change of ≥4 points = clinically significant shift.
When to use it
- Thrombolysis eligibility
- NIHSS 4–25: typical window for IV alteplase consideration.
- Thrombectomy selection
- LVO suspected with NIHSS ≥6 → CT angiography.
- Prognosis
- NIHSS at 24h and 7 days predicts 90-day functional outcome.
A reference for clinicians and students, not medical advice. A score supports a decision; it does not make one. Check every result against the patient in front of you and your local protocol.
At a glance
- Specialty
- Neurology
- Inputs
- 13
- Type
- Points score
