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Tests and diagnosis
By Mayo Clinic staffYour doctor may recommend a magnetic resonance imaging (MRI) exam if:
- Your headaches last more than a few hours
- Your headaches strike suddenly, like a thunderclap
- You're older than age 40
- You have other signs and symptoms, such as nausea and vomiting
In these cases, two different types of MRI can help your doctor verify that you have the harmless variety of exercise headache, rather than the type caused by a structural or vascular abnormality.
A regular MRI uses a magnetic field and radio waves to create cross-sectional images of the structures within your brain. A more specialized MRI scan — called magnetic resonance angiography (MRA) — visualizes the blood vessels leading to and inside your brain.
