Hi Kanaaz, My appologies for the very long delay. I actually ended up repeating the tilt test and in fact got abnormal results. Ultimately I was diagnosed with POTS. I have also had a 24 hour blood pressure monitor, which did detect some abnormal peaks and valleys -- which they said could possibly cause syncope episodes. However i am still waiting to have my appointment with a local specialist. I just finally got on the books today for 2 weeks from now. I am taking amitriptaline and propranolol, which I feel has helped me, however I am starting to experience tremmors in my hands and mouth again. My pcp suggested possibly raising the dose of propranolol but I am very lethargic and worry that this will cause more lethargy. I am not even 30 and I do worry that things will get worse as I age.