Hello there, There isn't much information to go by but going by the symptoms you have listed it seems like you could be going through anxiety. Just introspect if there has been a major change/ tragedy in your life or you are worried /anxious about any aspect of your future which might be leading to fear of death. To understand your problem in detail it would be recommended that you go visit a psychologist. They can help you figure out the reasons for your anxiety along with helping you come up with strategies to reduce it. In the mean time, you can try doing some relaxation exercises like deep breathing and focusing on the present.

Hello, you have not given much information. What was the result of CT scan? Anxiety disorder can present in this manner as well.

Your symptoms are suggestive of anxiety which could be secondary to drinking alcoholic beverages regularly, heavy smoking or excessive exercise. They could also be due to Hyperthyroidism, Borderline diabetes etc. We should also take into consideration psychological factors which depend on your early childhood experiences. Please visit a psychiatrist in person and discuss your problem. He will be able to arrive at the correct diagnosis and chart out a treatment program for you. As of now there seems no need to think of CT scan

Hi,  I think the fear in you has manifested  into   various other forms like, shivering  etc., Also  there can be  low self belief or low self esteem in you which makes you to behave like that.

These are symptoms of anxiety. No need of a CT scan.