Note: I'm not looking for medical advice, purely google fu.
I'm trying to find information about the times between triggers and the start of a migraine.
I can't seem to get the phrasing right on Google to turn up the information I need.
I've tried things like "time between trigger and migraine", "time from trigger to migraine", "how long from trigger to migraine", "migraine lead time", etc etc, all with quotes and without; I've tried them substituting "hours" for time, and all manner of things, but I'm just not getting any decent results.
Can anyone help me find the right wording? I figure people must be talking about this somewhere on the net.