Hello, I am new at this and hope it comes out correctly. I have a recent Diagnoses of Idiopathic Tachycardia. I am not sure I understand if this is Dysautonomia and I'm a little confused with the testing and the results. I will start out with a short version of the Doctor's report. The Tilt Table Test shows exagerated heart rate response to Tilt however, it does not meet the criteria of POTS. The heart rate increased between 15-30 bpm. However over 30 minutes the heart rate did increase by 30 bpm and there was instability in the Cereberal circulation as well as blood pressure. Pretty much he believes it is Idiopathic Tachycardia. Q sweat is normal QST and Emg are abnormal The 24 hr bp monitor shows an avrage bp of 126/80 Echo is normal, no left ventricular Hypertrophy. There is mild Mitral and Tricuspid Regurgitation. Autonomic testing is quite normal with normal four phases of vasalva maneuvers. His loop recordings consistently show Tachycardia. There is Sinus Tachycardia, this occurs during pretty much with all the spells he is sending in. The Doctor said I was in the grey area for POTS. It just so happened during the Tilt Test and some of the other testing, I was having a good week. I also read on this website that in doing the Tilt test you may need to stop certain medications such as Beta-Blockers. I don't know if it really matters or not in diagnosing Pots whether you are taking them are not during the Tilt test but I was on mine which is Metoprolol succ er 100 mg 1x a day, I was given this prescription by a previous Doctor due to extreme high blood pressure and an average heart rate of 120 bpm. I also have some of the reports from my testing and they are as follows, Nerve Conduction test 1. CMAP Ampllitudes were diminishedbilaterally. Motor Nerve Conduction in both lower extremities showed slowing. 2. Sensory Nerve testing in the lower extremities showed absence of responses and absentSensory Nerve Conduction. 3. A needle EMG exam of lower extremities showed mild denervationchanges in both extensor Digitorum Brevis Muscles. Basically findings showed electrophysicologic evidence for a mixed Sensory Motor Peripherial Neuropathy. Sonographic findings of the Thoracic and Lumbar spine were to lengthy to list showing edema and swelling in lower lumbar muscles and trauma etc, no known cause of this. Q sweat on the Doctor's report noted normal. Q sweat report findings were; 1. Forearm resting output 41 Reduced Response 2. Proximal leg resting output 39 Normal Response 3. Distal leg resting output 36 Normal Response 4. Proximal foot resting output 44 Reduced Response Yesterday one of the Nurses said on my report it said I had hypovolemia but I do not have that on my report. My Symptoms; Dizziness/light headed, loss of balance,nausea, blurred,double vision and problems focusing,slurred speech, heart palpatations-fast,hard,skipped beats,shortness of breath, trouble finding the right words at times in conversation etc, dry mouth,dry eyes, painful and red eyes, Migraines, muscle spasms, chest pain, muscle and joint pain, excessive sweating, bloating, stomach/intestinal pain, extreme fatigue, weakness, blackouts-not fainting-loss of vision,hypertension,hypotension, flushing, clamminess, swelling of hands, cold feet, upper, lower back,neck and shoulder pain ...maybe associated with disk problems and Brachial Neuritis of the right shoulder. Legs feel weighted at times, low body temperature average 97.2, heat intolerance but I have always had this but seems to be worse, chills on occassion, slight unexplained fever at times, frequent sinus infections. Example of bp readings; 1-13-11 these are the standing readings unless noted 1. @ 8:15 am 83/61. 2. @ 8:30 am 97/70. 3. @ 8:42 am 95/70, sitting BP was 108/77. 4. @ 10:00 am 100/69. 5. @ 11:49 am 105/77. 6. @ 12:30 pm 119/84. 7. @ 3:29 pm 105/76 pulse 105, taken +/- 20 minutes after after walking for an hour, I was trying to shake off fatigue. 8. @ 3:42 pm 100/78 pulse 105. 9. @ 3:52 pm 116/91 pulse 108 Seated. 10. @ 5:30 pm 147/101. 1-14-11 1. @ 8:10 am 90/71 standing. 2. @ 11:23 am 120/93 pulse 78 standing. 3. @ 11:32 am 110/84 pulse 86 standing. 4. @ 11:34 am 129/95 pulse 78 seated. 1-15-11 1. @ 9:00 am 79/56 pulse 108 standing. 2. @ 9:05 am 107/76 pulse 93 seated. Current Diagnosis; Idiopathic Tachycardia, Crohn's disease in remission, GERD, Brachial Neuritis of the right shoulder, Hypertension, controlled Disbetes,Sleep Apnea and Rest less legs but has deminished after taking Lyrica. Medications, Metoprolol was 100 mg Doctor reduced to 50 mg after noting my low bp even with high readings such as 150/110, Aciphex, Lyrica,vitamin B12, and Alpha-Lipoic Acid. I know this is lengthy but maybe someone has similar experiences, advice or thoughts that might be helpful. Thanks, Billiam