I think that’s what is causing it, and I know someone commented here – Craig ? – that it could be a possible reason some time ago – I didn’t follow up on it. Tut tut me. My calf muscles cramped since that last entry and I dimly recalled the comment, so I’ve been chugging water and juice since. My meds can’t help I guess as any oddness in sodium levels throws that into a nasty spiral. I just need to remember to drink more. Be nice if that is the reason – the headaches are horrible.