Hi and welcome to Healthcare amagaic. Thanks for your question... The symptoms you describe of feeling disconnected from the world, as if you are in a dream and not in reality are suggestive of depersonalization - which is a kind of psychological symptom. It is often associated with stress / anxiety and can be also part of a psychological disorder called dissociative disorder. The other symptoms such as palpitations, difficulty in breathing, chest tightness can also be anxiety-related. Now, I understand and fully agree with you that your symptoms are quite real and quite distressing indeed. I presume that you have had a medical examination and assessment to rule out any serious medical problems, and that is the reason your doctor is not suspecting any major medical causes for your symptoms. But you should be also open to the fact that these symptoms can be due to a psychological cause. There is a close link between our mind and body, and sometimes, psychological problems such as underlying anxiety can manifest as bodily symptoms. I strongly suggest that you have a consultation with a psychiatrist and discuss your current problems. He / she would be able to assess you in detail and suggest an appropriate management plan. And remember, just because you are seeing a psychiatrist, it doesn t mean that your physical symptoms will be ignored and you won t get any medical attention. Psychiatrists are also medical doctors with sufficient clinical skills to detect and treat medical problems, if any are present. All the best. - Dr. Jonas Sundarakumar Consultant Psychiatrist