Dizziness, Stomach ache, Vomiting kind of feeling, Sweating and body getting cold, Head getting very light when I have to face very critical situations. I am facing above issues since childhood whenever I have to face very stressful/tough situations. This always happens if I have to go for blood test etc alone. Few of the instances when the same happened 1. Both the nights in my childhood when my mother and father fell critically ill. 2. Every time I have gone for blood test. 3. Two three times in office when I was sitting with people and they started talking about cesarean and accident situations. 4. Once I went to saw my relatives in hospital and saw bleeding from a babies mouth. 5. Two or three times in school and office when I was confronted by people for work and study related issues. Is this some kind of problem? What is the cure for this?