Peace, mercy, and blessings of God be upon you. I have experience in removing costochondritis, a specialist in costochondritis and its removal. Symptoms of costochondritis.. 1/ Pain under the shoulder blade 2/ Feeling of shortness of breath 3/ Feeling of pricks in the heart 4/ Neck pain Causes of costochondritis 🤙🏻 Exposure to cold air Lifting heavy weights incorrectly Sitting incorrectly Sleeping incorrectly Sitting in a car seat for a long time During the session