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Sqad, thyroid was borderline, but i wish there was a conclusive link, because it could well explain a lot of odd things, the vertigo, dizzyness, that has been a real bugbear, and these muscle cramps which cause me to hop round like a loon. Will speak with doctor about this, and try tonic water, to see if it eases. No fun waking at 3am and throughout the night, and not being able to get back to sleep.
Thank you all for the help, it's always appreciated.