Fainted once.after that feel dizzy all the time.fear of dying.done tests and doctor said everything fine.

Fainting: Although there are some serious causes of fainting, if you have had tests for cardiac and neurological causes of this symptom, and some blood tests, it is possible ou may be more than ok. Normally an ultrasound of the heart (echo), EKG, blood testing, blood pressure, and EEG are good tests to use to find the cause of this symptom. Hope that helps!