<s>[INST] i am having really bad shortness of breath while trying to sleep, my right side will go numb and my heart races feel sick, palpritations, like a strangling feeling it the throat, sinking feeling into the bed, and i tight chest, this has been happening for 9 months and steadly getting worse, i have been diagnosed with anxiety disorder, and i take citalipram 10mg. i have been taking this for 6 mmonths, i have had all kinds of blood tests done for my dizzy spells during the day a mri of the head which olny showed a pituitary cyst. i have had a ultrasound of my neck ct scan of sinusis and EEG and a which  is all normal, what do u think this could be ? [/INST] Hello sir, and thanks for posting your query here. Although what you are having could be anxiety, but I could not see any mention of heart test reports. And as you said you are having progressively increasing breathlessness and have difficulty in sleeping, this could very well be due to heart problems. So I would suggest you to see a cardiologist and get your ECG and Echo done to see the heart function. If there is any problem with the heart function, obviously you will need medicines for that and your breathlessness should settle down. I hope this information would help you. Thanks and all the best. </s>