This article mentions several possible triggers for migraines, with a patent foramen ovale being one. There is also the change-in-weather trigger, from which I suffer. All the symptoms mentioned in the article could cause a fairly sudden change in blood pressure. A weather-related change in barometric pressure might have the same effect. I wonder if there’s a common mechanism in how migraine victims’ bodies handle changes in pressure.

Dotti Lydecker
Lake San Marcos, Calif