Headache Warning Signs
When Is a Headache an Emergency?
Updated: May 2026
Most headaches are not medical emergencies. Migraine, tension-type headache, and other primary headache disorders are common and often manageable. But some headache symptoms can be warning signs of a more serious problem and should be evaluated urgently.
When to seek emergency care right away
Go to the emergency room or call 911 right away if a headache is associated with any of the following:
- A sudden, severe headache that reaches maximum intensity within seconds to minutes, sometimes described as the “worst headache of my life”[1][2]
- New weakness, numbness, facial droop, trouble speaking, confusion, fainting, or seizure[1][2]
- Fever, neck stiffness, or a rash[1][3]
- Vision loss, double vision, or other major visual changes[2]
- Headache after head trauma[1]
- A new headache with reduced alertness, severe drowsiness, or impaired consciousness[1]
- A major change from your usual headache pattern, especially if the headache is new, unusually intense, or behaves very differently than prior headaches[1]
Why these symptoms matter
Some severe secondary causes of headache include bleeding around the brain, meningitis or other infection, stroke, brain inflammation, acute eye emergencies, or other neurologic problems that need prompt in-person evaluation.[1]
When urgent evaluation may still be needed
Even if symptoms are not clearly emergent, it is reasonable to seek urgent medical attention for:
- A new headache after age 50
- A new or clearly changing headache pattern
- Headache that is repeatedly triggered by coughing, exertion, or position change
- Headache with cancer, immunosuppression, pregnancy/postpartum status, or other significant medical concerns[1]
When telehealth may be reasonable
Telehealth may be appropriate for patients with headache symptoms that are not emergent, especially when the history is most consistent with migraine or another primary headache disorder and there are no major red flags. Telehealth does not replace emergency evaluation when warning signs are present.
Bottom line
If you have a headache with sudden severe onset, new neurologic symptoms, fever with neck stiffness, major vision changes, seizure, confusion, or other concerning features, seek urgent in-person care right away. When in doubt, err on the side of emergency evaluation.