According to the results of a TTT I had at the Cleveland Clinic, I have both orthostatic hypotension and tachycardia. I had follow up tests last week, so hope to know more about the specific cause when I get the results. In the meantime, I have been keeping a log of my BP, pulse and temperature, along with comments about how I feel. Actually, I started doing this about a year ago, after noticing fluctuations in my blood pressure (at that time, I was seeing high spikes in my BP, which is unusual for me). I resumed tracking about two months before my tilt test and have been doing tracking it since then. (Since the tilt, I started checking my BP laying down, sitting up and standing). To make a long story short, I have noticed different patterns in my vitals and how I feel. 1. Orthostatic symptoms upon standing: Drop in blood pressure and increase in heart rate, resulting in lightheaded feeling, racing heart, etc. Sometimes worse than others. 2. Feeling "relatively" fine i.e. feeling functional. Very mild symptoms (It figures, I had mild symptoms on both days of testing. Fortunately, it still showed up on the TTT, but as "delayed and accentuated") 3. Normal vitals (and orthostatic response), but feel crappy. Based on my data, "crappy" is a combination of several symptoms: a. unrelenting fatigue, "flushed feeling" in my face (face feels warm, but isn't red), palpitations (even though my pulse is LOWER than my tachy episodes). I often have a mild, headachy feeling in my eyes - at least, I feel like I'm going to have a headache, even if I don't have one By the way, these were also the symptoms I had last year, when my BP was spiking. I was put on Benicar last April, which has stopped the spikes, but I still have these weird spells. Oh, and the spells usually happen for several days or weeks in a row. Debbie P.S. I almost forgot. I did notice that my body temperature is LOWER on these days. My cheeks feel warm (flushed), but I have a low temperature. When I checked a few hours ago, it was 96.7.