Can geomagnetic storms cause headaches?

What the headache studies actually measured

A 1994 study of 40 people with migraine ^[1] reported a correlation between geomagnetic activity and attack frequency. The observation period ran from March to June 1988 in a small geographical area. The researchers also examined temperature and humidity and called for further study.

That is a reason to investigate a hypothesis, not a diagnostic rule. A short observational study can leave open alternative explanations and may not represent people in other locations or seasons.

A 2016 Scientific Reports paper ^[2] took a different approach: it analyzed about 63 million Twitter posts containing headache or migraine terms over three years. It found no significant relationship with geomagnetic activity.

Those were posts, not 63 million clinically diagnosed patients. Social-media language, reporting habits and the lack of verified individual diagnoses limit what that analysis can show. Its scale is valuable, but it does not make it a controlled clinical trial.

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Magnetic storms and ordinary weather are different

A geomagnetic storm is a disturbance of Earth's magnetic environment. Barometric pressure, temperature and humidity are atmospheric weather measurements. An article about one type of weather does not automatically support a claim about the other.

The planetary Kp index summarizes magnetic disturbance. It is not a pain scale, a dose measured at your body or a threshold for when a migraine should start. A storm alert also says nothing about your medical history.

What to write in a headache diary

The NHS headache guide ^[3] recommends a diary to help identify possible triggers. A practical record can include:

• When pain began, how long it lasted and how much it affected your activities.
• Symptoms you noticed and any care or medication you used.
• Relevant context: sleep, meals, hydration, stress and changes in routine.
• Days without a headache, so the comparison has a denominator.

If you want to explore geomagnetic activity, add that information after writing your symptoms. Keep the activity timestamp and your local time clear. A chart's UTC day can differ from your calendar day.

Choose the comparison window in advance. Trying the same hour, the previous day and every other possible delay until one looks convincing makes a chance match easier to find. A promising pattern should remain a question to check on later observations.

Can I use today's Kp to explain a headache?

You can use space weather today to see environmental context. You cannot use it to rule out other explanations or decide that a symptom is harmless. Common headache contributors include stress, dehydration and irregular meals, according to the NHS ^[3].

Seek medical advice for recurring or worsening headaches. Get emergency help for a sudden, extremely severe headache, or a headache with new weakness, trouble speaking, confusion or loss of vision. Do not wait for a storm to pass before seeking care.

A useful role for the app

Schumann Pulse lets you record a feeling, optional symptoms such as headache, and a note alongside environmental context. It is a journal, not a migraine diagnostic device. Its personal comparisons depend on suitable history; an entry made after a spike alert is treated differently from an ordinary check-in in the app's comparison analysis.

Read how to track mood and the environment for a repeatable recording method. The aim is a clearer record of your experience, including patterns that do not repeat.

Sources

References in the text lead here. Original publications open in a new tab; this guide stays open.

• De Matteis et al. (1994), [1] Geomagnetic activity, humidity, temperature and headache: is there any correlation? (opens in a new tab) Back to text ↑, Headache. DOI: 10.1111/j.1526-4610.1994.hed3401041.x.
• [2] Revisiting the connection between Solar eruptions and primary headaches and migraines using Twitter (opens in a new tab) Back to text ↑ (2016), Scientific Reports. DOI: 10.1038/srep39769.
• [3] NHS: Headaches (opens in a new tab) First mention ↑, diary, common contributors and care guidance.

This is an editorial review of selected evidence, not a systematic review or a clinical assessment. See our health evidence standards.