Cause
While the true causes of Tietze's Syndrome are not well understood, it often results from a physical strain or minor injury, such as repeated coughing, sneezing, vomiting, or impacts to the chest. It has even been known to occur after hearty bouts of laughter. It can occur by over exerting or by an injury in the chest and breast.
Psychological stress can exacerbate Tietze's Syndrome, but there is no evidence to suggest that it is a direct cause.
Patients who have had radiation therapy to the chest/breast will often experience this syndrome which can occur shortly after therapy or years later. It is found more often in teens than adults.
Read more about this topic: Tietze Syndrome