Kelsie Bryson says the excruciating migraines started around 2008, when she was 18 years old. They would come about once a month and cause what the now 28-year-old Bryson calls “really terrifying side effects.” “I would experience numbness in the right side of my body — including in my mouth, which would prevent me from talking for 15 or so minutes at a time — vomiting and confusion,” she told Global News. “I would be at work, and suddenly, it would be hard to read words or speak. I would bump into things and then my body would go numb....