Oi vey

Hi, I am a new "poster" and have read with interest the adrenal insufficiency & dysautonomia thread. The symptoms sound very familiar, and I am currently being worked up for adrenal insufficiency. I was diagnosed with "autonomic instability" (orthostatic hypotension, neurocardiogenic syncope, hypovolumia) about a year ago but probably have had the condition since my 20s (I just turned 50). I also have Hashimoto's thyroiditis, which is under control. Most of the time my autonomic symptoms are manageable. The exception, though, is that the common cold or other minor ailments seem to cause disabling excerbations that can last months. I have been told that I have very high renin levels, which were evident in several blood tests. Is anyone familiar with this? My endocrinologist believes the high renin indicates that I am hypovolumic, but my other docs seem completely mystified. Thanks!