What causes Light headed, extremely low bp

[Daddysgirl1997_17]

I am a 17 year old female. over the past few years I have been getting light headed it stopped then I got severe migraines, the weekend before Halloween I was emitted to the hospital by paramedics because I got light headed and felt like I was going to fall, my bp sitting down was 60 over 40, standing up it was 53 over 39 i think. Since the I keep having that same feeling. I have had 4 EKGs and they all came back normal. The doctors don't know why I keep getting light headed and fell like I'm falling. When I feel like I'm falling my body starts shaking really bad and my hands start to go numb.

[CP3kids]

How long have you been taking the Concerta?  Did the symptoms appear a short time after starting it?  How is your diet....are you eating enough and drinking enough fluids to sustain your body?  Was a 24 hour Holter Monitor done on you in addition to the EKGs, if not one needs to be done, or perhaps even a 30 day Holter monitor?  Did they perform orthostatic blood pressures on you to determine the ranges in your pressures?  Are they still investigating the cause for you?  A quick fix to raise your blood pressure, is to drink a cup of caffeinated coffee or a mountain dew, since caffeine elevates the blood pressure, but you need to know WHY you are having the decreased blood pressure.  Please, for safety's sake, with ALL changes in position for you, DO IT SLOWLY.  In other words, prior to getting up from a laying down position, sit on the edge of the bed for a few minutes to allow for normalization of your pressure.  When going from a sitting to a standing...stand still by a chair that you can hang onto for a few minutes as well.  If you fall, faint, pass out (called syncope), or whatever you want to call it, you are putting yourself at risk for a head injury or fractures someplace.  Please let us know what you find out!

[Daddysgirl1997_17]

I am also taking 72mg of concerta