Can a Patent Foramen Ovale Cause Headaches?
No, there is insufficient evidence to support that a patent foramen ovale (PFO) causes headaches, and PFO closure is not recommended for migraine treatment. 1
Evidence Against PFO as a Cause of Headaches
The most recent and authoritative guideline evidence directly addresses this question:
The 2024 U.S. Department of Veterans Affairs/Department of Defense Clinical Practice Guideline explicitly recommends against PFO closure for the treatment or prevention of migraine (weak against recommendation) 1
Multiple earlier guidelines consistently state there is "not sufficient evidence to recommend PFO closure" for migraine syndrome with aura 2
Why the Association Exists But Isn't Causal
While PFO is more prevalent in patients with migraine with aura compared to the general population 3, this represents correlation, not causation. The recognition of an association between migraine with aura and PFO has "come full circle over the past 2 decades" with insufficient evidence emerging to support a causal relationship 2.
Clinical Implications
For your patient without atrial fibrillation, prior thromboembolic events, mechanical valve, or closure device:
- The PFO is incidental to any headaches they experience
- Standard migraine evaluation and treatment should proceed independently of the PFO
- Do not pursue PFO closure for headache management
- The PFO requires no specific intervention unless other indications develop (such as cryptogenic stroke in a patient ≤60 years old with high-risk PFO features)
Important Caveat
The only scenario where PFO becomes clinically relevant for neurological symptoms is in carefully selected patients aged 18-60 years with cryptogenic stroke who meet specific criteria including large shunt size and atrial septal aneurysm 4. Even in these stroke patients, headache relief is not an indication for closure.