FOKite
My pleasure, but I just want to re-iterate that the paracetamol and copious quantities of water is something that has on occasion worked for me (not all of the time). I wouldn't dare to call it a cure; just a sticking plaster that sometimes sticks for me
Thinking about it, riverfish might be on to something with the idea of occurrences being when pressure/stress is receeding. Most of my episodes have been at home (where I should be relaxed) and certainly I can think of events on blocks of days off after night duty.
I've started a log of occurrences (thankfully only the one so far) as a result of this thread, so thanks from me too for everyone's input.
TWJ