I was diagnosed with Mitral Valve Prolapse and Vasovagal Syncope about 10 years ago. At the time, I was having palpatations, shortness of breath, chest pains and fainting. No treatment was started until the symptoms again reappeared in 2005. I did start Atenelol for about 1 month back then but had adverse reactions to it (lower bp, lower pulse, dizziness, more fatigue and fainting). I stopped taking Atenelol because I found out I was pregnant. Since that time I have had 3 children and increasing 'odd' symptoms. I have been doing a lot of research over the past few months and have now come to the realization that I suffer from dysautonomia and have symptoms characteristic of POTS. I have been keeping my blood pressure and pulse readings at various times and have performed numerous 'poor man's tilt table' tests on myself and the increase in heart rate is there everytime (usually doubles). I suspected at first that my bp was dropping upon standing because of the way it makes me feel but was surprised to find that it actually increases by 10 Systolic & Diastolic. Immediately upon standing I get a head rush type feeling. I have to concentrate on my breathing because it feels like I got the wind knocked out of me. I get the blood pooling too. I really feel this traces back to my early years in life though. I have never been able to tolerate medicines very well and never knew why. I have fainted for seemingly unknown reasons. I also can't run or exercise without getting short of breath and skyrocketing pulse. I have recently been waking with numb 'sleepy' hands and 'dead' feeling legs. Over the past few years I have become intolerant of multiple foods and more chemical sensitivities. I smell phantom smells like something is burning that come out of nowhere and leave just the same. I can't breath dander from our chickens without an immediate reaction. I get sore throats out of nowhere and seem to always have sinus related problems. Does this sound like anyone else here? I have been reading here anonomyously for a few weeks and I really hope to make some new friends.