pellicle
Professional Dingbat, Guru and Merkintologist
it can also be damage to the cartilage sections of the lower ribsAhh - maybe it is my intercostals… somewhere around the ribs. I figured that pain came up after the more severe pains seemed to get resolved. Seems related to deep breaths.
Which are technically the costal cartliage.
you may also notice here that the sternum has a top section called the manubrium ... I've taken pictures of mine ... but I'm sure you don't want to see that