<s>[INST] Hi! I'm 18 years old (female) and for a very long time, since I was a kid, I would get random times where I had to take shallow breaths because it felt like my lungs got caught on something and it was like sharp pains if I breathed in too much. It seems like its gotten worse recently. Any idea what it could be? [/INST] chest pathology like a rib problem, muscular spasm, etc can be suspected.An xray chest is required. ecg needs to be done to rule out cardiac cause.any injury to chest, associated symptoms of cough and infections needs to be considered.Consuation to a local physician will help. </s>