Hey there peetie. So sorry to hear what you and yer mum are going through. I've written about my experiance in the thread "My Chiari Experiance" in this forum. I'm keeping it updated as I find out things. I am 7 years post-op after Chiari Decompression surgery. I'm more than happy to discuss it with other chiarians on the board.

I must say first off that I am NO expert. However, I AM a survivor .

Second, remembering I'm not an expert, but I have never heard of dehydrating yourself being a way of testing for Chiari???? My hubby (who is an EMT) said that the body compensates from the periphreals inward. (Laymens terms outside inward). IE, other body systems would be affected aversely, in his understanding, before a reduction of CSF would be negligible. (Please remember, this is opinion only, not actual doctor talking). But still, I'd be very wary of such an "experiment". The body can dehydrate very quickly.

Please keep us updated, its a pleasure to meet cha!!!!

God Bless,

Dawn