Has anyone here dealt with costochondritis? I was diagnosed with it two weeks ago after having it for probably the last 2-3 months off and on. It got so bad two weeks ago I went to the doctor thinking I was having a heart attack. She assured me my heart was fine but that I had this major chest wall inflammation thing going. She put me on Ibuprofen 3x day and hot packs. She offered muscle relaxants but I have so many medication reactions I didn't wat to try it. I have anxiety on top of it all. What I want to know from anyone who has had this is: do you have this stiffening along with the pain from the upper chest down to below the rib cage? Mine comes and goes but some days it scares me really bad when it comes into my upper chest because I feel like I can't breath. Even though I am, it is a very scary feeling for several hours. The pain has subsided a lot but still getting this stiffness that will overcome my chest area for several hours at a time.