No probs, (thanks MTD)
I have had to sleep sitting bolt upright for the last 12+ years, as many of my symptoms were even worse laying down, that’s one of the reasons why Dr Diana’s ‘vagus nerve/jugular vein’ theory made so much sense to me. In bed, it’s no good if your pillow forces your head into flexion, you need to avoid this at all costs, you have to support your neck and stop anything from pushing your head forwards.