Diagnosis

Hunt-Hess Grades of Subarachnoid Hemorrhage

Choose a preferred language

Your loved one may be unable to make decisions about treatment. So you may need to decide what’s best for them. Your loved one’s surgeon, who is an expert on the brain (neurosurgeon), will talk with you. They may refer to the Hunt-Hess scale (see below). This scale helps the surgeon assess a person's condition. Treatment options can be affected by test results and the grade showing how severe the hemorrhage is.

Healthcare provider with digital tablet talking to woman.


Hunt-Hess grades of subarachnoid hemorrhage

Grade

How your loved one may feel

I

Alert, aware of surroundings, either no symptoms or mild headache or neck stiffness

II

Alert, aware of surroundings, moderate to severe headache, stiff neck, no neurologic defect except cranial nerve palsy

III

Sluggish or confused, has weakness or partial or severe paralysis on one side of the body

IV

Dazed, has total paralysis on one side of the body

V

Comatose, with abnormal posture

Adapted from Hunt WE, Hess RM. Surgical Risk as Related to Time of Intervention in the Repair of Intracranial Aneurysm. J Neurosurg 1968; 28 (1):14–20.

The grade is advanced one level if you have stroke plus a serious systemic disease such as high blood pressure, diabetes, severe hardening of the arteries, or chronic lung disease. It's also raised one level if you have stroke and vasospasm.

Your neurosurgeon may use another aneurysm and neurological grading system, such as the Glascow Coma Scale or the World Federation of Neurological Surgeons grading scale.

© 2000-2026 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.

Start your journey toward better health

Select a primary care physician who will deliver personal care, close to home.

Find a Doctor

We have more than 4,500 specialty care physicians in our network

We have you covered from head (neurosurgery) to toe (podiatry.) And everything in-between!

Find a Doctor

Need Help?

Get the right care at the right time.

Learn More
Related Articles
Read article
Brain Health
Normal Lumbar Puncture

Read on to learn how to care for yourself at home after a lumbar puncture.

Read article
Brain Health
Having an Evoked Potential Test

Evoked potential tests measure the electrical activity in the brain as nerve pathways are stimulated.

Read article
Brain Health
Lumbar Puncture Fact Sheet

Your healthcare provider has advised you to have a lumbar puncture. Read on to learn more about this test.

Read article
Brain Health
Consent for Lumbar Puncture

A lumbar puncture is a test to look for infection in the spinal fluid (meningitis) or the brain (encephalitis). It is also used to look for signs of bleeding in the space around the brain. A lumbar puncture is also called a spinal tap. This is a consent form for the procedure.