Originally Posted by PTravel
... For me lack of sleep can trigger one, as can too much sleep (go figure

). I don't get them from stress, but from a sudden release at stress, a phenomena which has been documented as "Saturday migraines". ....
Oh, the Saturday migraine! I forgot about that. Not only are migraines triggered by release from sudden stress (I, too, found my migraines started just as the stressor was finishing), but there is
the caffeine withdrawal headaches, which can turn into migraines.
In the 1080s, I noticed I religiously got migraines on Saturday, lasting through to Sunday, until my doctor quizzed me about my caffeine intake. Sure enough, in the efforrt to lose weight, I drank a lot of regular coffee (8-10 cups/day) at the office, but then only 1 or 2 cups on the weekends. That was when caffeine withdrawal was just starting to become known. I switched to mostly decaf during the week and at least THAT trigger stopped (still had other migraines, though).