BOSTON – During his first hour with this new patient – a woman who suffered a stroke in her 20s and now, in her 30s, grapples with debilitating migraines – Dr. Calum MacRae begins learning all about her. He starts with typical questions, such as where it hurts and whether extreme heat or cold makes things…

BOSTON – During his first hour with this new patient – a woman who suffered a stroke in her 20s and now, in her 30s, grapples with debilitating migraines – Dr. Calum MacRae begins learning all about her. He starts with typical questions, such as where it hurts and whether extreme heat or cold makes things…