Yep PsA attacked my sternum, it was like omg I’m having a heart attack! Was checked out and no heart attack. The pain was so severe I would literally hug a pillow rolling around on the floor. Also felt like I was being stabbed lower left side maybe closer to my spine. Then a year later it all went away never been back from 35 yrs ago since it happened. Side note, did a health screening for a new job. One test I assume was a lung capacity test, I believe I failed it. He kept telling me to blow harder.
Never followed up to really understand what happened.
My biggest problem with the medical community is weird things happen, and they will tell you depression will cause your imagination to run wild. That will light me and it’s on!