Dear Welcome to HCM We understand your concerns I went through your details. I suggest you not to worry much. I can see that you are anxious. You are anxious about something which makes you startle. But the description do not say anything about your reason for anxiety. The symptoms are related to anxiety. If you are unable to tell the reason for anxiety, visit a psychologist who uses several methods to find the reason for your anxiety. once the reason is found, this problem can be treated easily with the help of psychotherapy. If you require more of my help in this aspect, Please post a direct question to me in this website. Make sure that you include every minute details possible. I shall prescribe the needed psychotherapy techniques which should help you cure your condition further. Hope this answers your query. Available for further clarifications. Good luck.