15 yr old - fainted for about 15 minutes rushed to the ER. CT scan of brain and chest xray all fine. referred to cardiologist who cleared her too.  Blood test shows 11.2 Hemoglobin and 3.2 potassium. She continues to be dizzy and lightheaded and sometimes even feeling she is going to faint again. Now her hands are getting sweaty when she is feeeling like that.  She increased her salt in take an fluids including gatorade.  Please advise.
Symptoms described by you especially considering young female don't seems to be organic and can be attributed to anxiety. Try to find out precipitating factor. Also rule it organic cause by doing brain imaging and EEG. Hope my answer will help you.  Take care.  Don't forget to rate me.