Patent Foramen Ovale



The vast majority of people with patent foramen ovale (PFO) have no symptoms that can be seen, felt, or noticed, although some studies have linked PFO with having migraines. Most people with a PFO, however, usually don’t even know they have it until they suffer a stroke. In some cases, people with a PFO also have other conditions that increase their chances of having a stroke such as atrial fibrillation (Afib).