Get your Holter and Head Up Tilt Test done.
I hope you are better by now.
Going through your your case history and your recent other queries I could come to the possibility of a condition called Neuro-Cardiogenic (or Vasovagal) Syncope
As you have informed that most of the time these symptoms of getting dizzy or occassipnally losing consciousness transiently with flaccid limbs
occured while standing up or in standing position for long time. You have also informed that your Blood reports, Resting ECG etc have been normal.
Now, this could be due to a sudden momentary fall in BP or Heart Rate
or both while assuming the erect posture.
Have you been ever tested for Postural Hypotension
by recording your BP in supine as well as standing position? If not, get it done.
Secondly, if this is okay you may get your 24 Hr. Holter monitoring done to rule out any abnormality in Heart Rate and Rhythm. Some clinicians may prefer an extended period rhythm monitoring by External Loop Recorder.
If even these turn out to be normal then a Head-Up Tilt Test (HUTT) should be performed where you are required to stand along an inclined (70*) table for about an hour while your vital parameters are being monitored. If your symptoms are reproduced either by just stading or by provocation with an oral medicine that is offered in the later part of the test..it is called positive. If so, suitable therapy may be offered depending on the type of results of the test.
I am sure your doctor should be able to clinch the eaxact cause of your symptoms this way.
Wishing a speedy recovery..
- Dr. Satish.