<s>[INST] I have been experiencing shortness of breath, tightness in the center of my chest, cold fingers and toes, night sweats. I have no congestion, doctor says my lungs are clear and I passed a stress test (on treadmill). Doctor prescribed Symbicort. I have been using it for over a month with no results. Doctor says we could try another inhaler to help, but doesn t seem to know what is causing these symptoms. YYYY@YYYY [/INST] Thanks for your question on Chat Doctor. I can understand your concern. You had normal trade mill test and your lungs are clear, so no need to worry about major cardiac or Pulmonary diseases. Sometimes, stress and anxiety can cause similar symptoms. So better to consult psychiatrist and get done counseling sessions. Try to identify stressor in your life and start working on its solution. You may need anxiolytic Chat Doctor.  So avoid stress and tension, be relaxed and calm. Don't worry, you will be alright. Hope I have solved your query. Wish you good health. Thanks. </s>