what is costochondritis symptoms
Symptoms of Costochondritis. 1  Pain of on the side of the sternum (breast bone) is the main symptom. 2  Pain that gradually develops over weeks. 3  Pain upon movement, coughing, sneezing or deep breathing â sharp, stabbing, stitching pain.  Tenderness â when pressure is applied to the area (sternum or on the side of the sternum).