that's for elevated blood pressure.
dehydration increases not decreases blood pressure. The only condition I'm aware of that does the reverse is autonomic failure.

There has been some fairly unsubstantiated research that suggests in a small proportion of people there is a very short term (15 mins or so) increase in blood pressure immediately after drinking a large amount of water - thought to be due to a misfiring control receptor - but otherwise, like I say, I'm astonished.
( the mighty badger Aphrodite, on a bar stool, by your side, Mon 30 Jan 2012, 14:18, 1 reply, 14 years ago)

Meh, just what I was told
Probably nhs cuts innit?
( Naked Ape call me Caitlyn, Mon 30 Jan 2012, 14:19, Reply)

no, genuinely, he's a cardiologist
I'm sure he's got a million times better handle on this than me, I just can't possibly imagine how it could happen, except the receptor thing, and that's really short term.
( the mighty badger Aphrodite, on a bar stool, by your side, Mon 30 Jan 2012, 14:23, Reply)