If someone gets a sudden headrush while sitting and feels lightheaded is this most likely a seizure or panic related dr says panic what's more likely?

Work with your doc: With all due respect, why would you trust our opinions here on healthtap (where we've never met or talked with you in person) over your physician, who has? If someone described this to me, i'd think it more likely related to anxiety/panic, rather than seizure. Or possibly a response to some non-prescription drugs being used. So that means i'd vote with the doctor who's already working with you.