Discussions By Condition: General well-being

Light headedness, fainting, twitching, etc.

Posted In: General well-being 3 Replies
  • Posted By: blueshark1019
  • August 14, 2007
  • 02:39 AM

On occasion when I stand, I become light headed and black spots appear in my vision, often filling my vision completely causing a black out. In the most extreme cases, my legs start trembling and I have to quickly sit or lay down before I faint. Many times when I am laying I start twitching uncontrollably. Almost like a seizure even though I have not been diagnosed as being epileptic. What may be causing this? I should also mention, if I duck my head down fast enough right after the sensation begins, its usually less severe of a reaction. This has been going on for atleast 5 years, probably closer to 10. I am 22 years old, 6 feet tall, 135 lbs. Other than this Im perfectly healthy and rarely fall ill.

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3 Replies:

  • I have experience the same lightheadness syptoms for many years, but not the twitching. My GP sent me to a cardiologist for a tilt table test. It takes about on hour. You lay on a table at varying degrees and they measure your blood pressure, heat rate and oxygen saturation. In some cases you are given a nitroglycerin tablet. They are testing your blood pressure response to your heart rate. When your heart rating increases, your blood pressure should increase as well, but in some cases when your heart rate increases your blood pressure decreases and your brain is not getting enough oxygen. Your bodys response is dizziness or fainting. Once in a lying down position the heart rate decreases and oxygen is restored to your brain. The condition is call Neurally Mediated Hypotension and it can be treated by several medication. I my case I take 7.5 mg of midodrine 3x daily. I hope this helps.
    Anonymous 42,789 Replies
    • October 29, 2007
    • 02:51 PM
    • 0
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  • Sounds like a stroke. Go to the doctor.
    Monsterlove 2,921 Replies
    • October 31, 2007
    • 05:58 AM
    • 0
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  • The lightheadedness with standing is due to a decrease in blood pressure when your body switches to a vertical position. It's called orthostatic hypotension and it's fairly common. When going from laying down to standing up, allow yourself to sit upright first. Always rise as slow as possible to allow your body to adjust.The twitching sounds like it could be a sign of a more serious problem. If you haven't spoke with a doctor about it, I suggest you do.
    ReneeS14 4 Replies
    • January 17, 2008
    • 01:08 AM
    • 0
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