<s>[INST] I am 23 years old and since Im a kid I have this heart sting every now and then, sometimes not for months then day after day. I cant really breath because the pain gets worse the deeper I breath. I heard about pleurisy but I dont know what it is or if its that... what can it be?? [/INST] Thanks for your question on Chat Doctor. I can understand your concern. Pleurisy is inflammation of pleura. It is caused by pneumonia, tuberculosis, pleural effusion, bronchitis etc. So pain of pleurisy is continuous, not intermittent or episodic. So I don't think you are having pleurisy. But better to get done chest x-ray to rule out above-mentioned possible causes of pleurisy. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks. </s>