sometimes pre-syncope symptoms can be worse than a full fledge fainting spell for me because it tends to come in episodes and last much longer than fainting episodes; but fainting episodes are far more dangerous to me (severly sprained neck, contusions, concussions, frontal lobe brain damage, sprained wrists etc)
lightheadedness, dizziness, weakness, pounding chest or chest pains, fatigue then I get a burning hot feeling all over and then chills, horrendous headache and blurred vision, sometimes vertigo, shortness of breath and nausea happens with it; yet other times none at all just dizziness
I have a mixed brew of symptoms and conditions (check my profile) all dx through a full workup which included, ekg's, echo, stress test, MRI, CT's, Xrays, Cath, EP Study and a tilt table test....
autonomic dysfunction (dysauotonomia) can be difficult to diagnose and treat...I've tried water & salt loading, compression clothing, meds, avoidance, lifestyle changes/intervention and even a pacemaker/defibrillator but symptoms and episodes still persist... although many others do have success with things I have tried
here's some info to mention to your dr or find one of the dr's listed that diagnose and treat in your area
http://www.medhelp.org/health_pages/Neurological-Disorders/Autonomic-Dysfunction-FAQ/show/181?cid=196