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Hunt–Hess Scale

Grades aneurysmal subarachnoid hemorrhage severity at admission by consciousness, headache, neck stiffness and deficit.

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Check the population, units and version. The result shows the formula or classification; it does not make an automatic treatment decision.

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Method · Limits of application

Hunt–Hess 1968: grades I–V; original adjustment of 1 grade for severe systemic condition/vasospasm

Hunt–Hess describes clinical severity in subarachnoid hemorrhage; it is not a CT classification. This interface records the grade from I to V selected by the examiner and does not automatically add a grade for severe comorbidity or vasospasm. Document factors that impair assessment of consciousness, such as sedation. Percentages from the historical series, when displayed, are not an individual prediction of current mortality or an automatic treatment decision.

Conditions of use

Check the population, units, inclusion and exclusion criteria, and version in the original source. A result alone does not establish a diagnosis, discharge decision or prescription.

Documented parameters

Clinical presentation

3/3 reference cases checked. Numerical tests are not clinical validation.

Sources and documentation

Documented formula

Transcribed from the source or a recorded revision; this is not a clinical recommendation.

Select the patient’s grade. The original proposal adds one grade for severe systemic disease (hypertension, diabetes, severe atherosclerosis, chronic lung disease) or severe angiographic vasospasm.

References

Identifier: escala-de-hunt-hess

Original clinical content: Brazilian Portuguese.

Method version

Hunt–Hess 1968: grades I–V; original adjustment of 1 grade for severe systemic condition/vasospasm

escala-de-hunt-hess@native-2026-10-03+fae6e34b8894

Source for the active edition

The bibliographic edition identifies the source. By itself, it proves neither full conformity of the formula nor clinical approval.

Synthetic cases checked (3)

Synthetic cases for checking the implementation, with no patient data.

Case 1

reference-001

Inputs

Clinical presentation: I – Asymptomatic or minimal headache and mild neck stiffness

{
  "grau": "1"
}

Expected result

{
  "score": 1,
  "level": "low",
  "verdict": "11%"
}

Actual result

{
  "score": 1
}

Case 2

reference-002

Inputs

Clinical presentation: III – Drowsiness, confusion or mild focal deficit

{
  "grau": "3"
}

Expected result

{
  "score": 3,
  "level": "mid",
  "verdict": "37%"
}

Actual result

{
  "score": 3
}

Case 3

reference-003

Inputs

Clinical presentation: IV – Stupor, moderate to severe hemiparesis; possible early decerebrate rigidity and autonomic disturbances

{
  "grau": "4"
}

Expected result

{
  "score": 4,
  "level": "high",
  "verdict": "71%"
}

Actual result

{
  "score": 4
}

Code and reproducibility

This tool’s code on GitHub

Download code and tests

Sources, version and reproduction instructions

The code tests are technical checks. Clinical approval and professional translation review are recorded separately.

Relationship with cancer research

General context — relationship to be defined

A resource for general clinical contexts. This edition does not assign a specific oncological relationship; selecting it for a study requires a justified question, population and purpose.