It can only help I made typo above should say "Lowering Threshold for pain"
(when dehydrated)

Thank you i do drink lots of water so i just need to up my intake

might indicate your body telling you to hydrate yourself better
dehydration can cause the"meninges" covering of the brain to be more sensitive to any noxious stimuli.....lowering the for pain....which is caused by swollen vasculature in the meninges
Just like a hangover...from too much alcohol
Try drinking more water ...see if that reduces frequency?

Yes I also crave salt on miagrine days

Yes. Good thing I have low blood pressure