The perfect storm: it can erupt at any time if a variety of factors interact just right. Maybe it all starts out with a stressful day at work. Although you’re relieved to go home and get it off your mind, you can’t, leaving you with a fitful night of sleep. When you wake, you have a kink in your neck. The morning rolls on, and you juggle your schedule as well as the needs of your household. You step onto an elevator – part of your normal routine – and you take a whiff of a strong perfume. Your sinuses are stimulated, and you undergo a migraine attack.