Cleveland Clinic Journal of Medicine (CCJM)When is Brain MRI With and Without Contrast Indicated for Evaluation of Headache?

✅ Clinical Decision Support / Practice Guidance

Most headache presentations do not require neuroimaging. The decision to obtain MRI, and whether to add contrast, should be driven by clinical features suggesting a secondary headache disorder. The authors provide a case-based framework for identifying situations in which MRI with and without contrast adds diagnostic value.

Clinical Considerations

• Routine neuroimaging is not recommended for stable migraine without atypical features or red flags.
• MRI is generally preferred over CT because of greater sensitivity for intracranial pathology.
• MRI with and without contrast is recommended when evaluating headache in patients with malignancy history, immunosuppression, focal neurologic findings, suspected infection, intracranial pressure disorders, or trigeminal autonomic cephalalgias.
• Gadolinium contrast improves detection of tumors, inflammation, infection, active demyelination, and CSF pressure disorders.
• Contrast use increases cost and requires caution in severe kidney disease and other select populations.

Practice Applications

• Use headache red flags and differential diagnosis to determine whether imaging is needed.
• Reserve contrast-enhanced MRI for situations in which the result could meaningfully alter diagnosis or management.
• Reassure patients with uncomplicated migraine that routine neuroimaging is generally unnecessary.
• Consider MRI plus venous imaging when idiopathic intracranial hypertension is suspected.