I had wisdom teeth extraction few days ago and during procedure I got syncope attack. I've experienced this in past as well when I got blood from nose and I fainted. I mostly get syncope attack when I see, smell or even imagine blood. I used to get anxiety attack as I have psychological issues. I just thought abt blood flow from heart to brain and suddenly I started to feel weak, low bp, heaviness in heart and gastritis. Is it a sign of any underlying disease or a psychological matter?