Headache
GeneralIf this is an emergency, call 911 now. This tool is for general information, not emergency guidance. If you're having severe symptoms, don't read this — get help.
What the internet says
Brain aneurysm. Meningitis. Brain tumor. Stroke. Intracranial hypertension.
What it probably actually is
Tension headache (tight neck and shoulder muscles — very common). Dehydration. Too much screen time. Skipping meals. Caffeine withdrawal. Sinus congestion. Stress. Bad posture. Not enough sleep.
🧠 The full picture
About 47% of adults worldwide have a headache disorder. The vast majority of headaches are tension-type or migraine. The famous "thunderclap headache" that signals something serious is distinct — it reaches maximum intensity within 60 seconds. Regular headaches build slowly.
⚠️ When to actually call your doctor
These are real red flags. If any of these apply, don't wait.
- "Worst headache of your life" that came on suddenly like a thunderclap
- Accompanied by fever, stiff neck, and sensitivity to light (meningitis triad)
- With confusion, slurred speech, or vision changes
- After a head injury, even if it seemed minor
- Progressive — getting worse every day for weeks
- Wakes you from sleep consistently
📚 Sources
This information is based on guidance from:
World Health Organization Headache DisordersNIH National Institute of Neurological DisordersAmerican Migraine Foundation
Always verify important health decisions with your doctor or a qualified healthcare provider.