If I get the zig-zag lines I don’t get the headache.
Main trigger for me is beer (some chemical produced during the malting process of barley, so wheat beer tends to be OK).
Typically, the headache lasts 70 hours. I get nauseous on the second day but I never actually vomit.
I’m very sensitive to sounds (some worse than others). Light is OK. I prefer to keep busy to keep my mind off the pain. My speech gets a bit mixed up – like my mouth can’t keep pace with my brain.
I get complete, temporary, pain relief by undertaking vigorous exercise; cycling running, hill walking, sex all work. The pain returns about 30 minutes after stopping.
I’ve had these for over 20 years now, getting 4-6 per year.