Hi Canyondweller- my spikes usually occur while I am asleep and I am awakened by them with a weird feeling coming over me, bringing me out of my sleep. I head to the bathroom and take my bp which is usually around 110/107 when this happens. I take a 2.5 mg xanax and watch the pressure go down within the hour. Along with this I have elevated heart rate ranging in the 105 area. It's all so scary to me. I don't have any other symptoms except sometimes I get anxious and other times I feel very warm, but upon taking my temperature I don't have a fever. I don't live alone, but when this happens I never wake up my husband. SInce this started I have always been able to bring it down with the Xanax, however there were a few scary nites that I thought I'd end up in the ER, and for me that would be traumatic as I am terrified of doctors, hospitals, etc. I figure if I am going to die I'll do it in my bathroom....LOL. (What a thing to joke about, right?) I don't know why this happens though I am a stressful person, but the ***** thing is this usually happens in the middle of the night when our pressure is supposesed to be at its lowest. I went to my GP and he said panic attacks. I searched on google and came up with other causes, which too, scared me but I am hoping it's anxiety related and nothing more. Like you, this scares me. I am afraid of getting these episodes and wish them no more.