Instead, over the next six years, I’d be hospitalized four times for chronic migraine disorder, the most disabling form of migraine disease, which is the second most common cause of disability globally. Chronic migraine involves, among other things, having a headache for 15 or more days per month. I’d also try all of the available medications for migraines despite their side-effects and begin avoiding bright lights, loud noises and a long list of foods that other chronic migraineurs told me could worsen my pain including gluten, tomatoes, dairy, bananas, certain varieties of onions, lemons, olive oil and anything aged – including leftovers.