Fainted once while jogging. specialists done tests - nothing wrong. recently ran and when feel heart rate up and dizzy. feared fainting. panic attack?

Running: You may possibly need to be more hydrated. Make sure you are drinking plenty of fluids wher exercising.

Faint: Lots of possibilities including panic. Without more information can't say. Ask your docs who know you what they think.

Exertional Syncopy: Biggest concern is to rule out a heart rate and rhythm issue and to evaluate for the most common cause of sudden death in athletes in the us, hypertrophic cardiomyopathy. First rule these out with an ekg, holter monitor and heart echo. Other issues can involve hydration, electrolytes, sugar, or autonomic nerve problems which can effect your blood pressure and nutritional delivery to the brain.