Re migraine triggers. I was forced to stop drinking coffee by the doctor. They wouldn't start prescribing drugs until I'd removed likely known triggers from my diet. So, no caffeine or red wine. I was reluctant, I love coffee. I could drink really strong coffee and it didn't make any difference to my headaches.
Anyway, I stopped drinking coffee. No difference to the migraines. Tried various drugs until found one that stopped the migraines.
Then I tried a sip of coffee . . . No, can't even go near a deep sniff of coffee, instant piercing pain. If I sip coffee, so much as a couple of teaspoonsful, the world goes wavy, I lose control of my legs, my speech, my facial muscles . . . Effects last 15min to a couple of hours. From a couple of teaspoons of coffee.