Costochondritis is more frequent in women and occurs in the cartilage of the 2nd-4th ribs next to the sternum, more often in the 2nd and 3rd ribs, and rarely in the rib arch. Mostly unilateral single ribs, but also bilateral multiple ribs. The main manifestation is unilateral rib pain, which may appear as pain on pressure and swelling of the painful area, and may be aggravated by upper arm movement, deep breathing, and coughing. In infectious costochondritis, there is localized skin redness, swelling, heat, and pain, and in severe cases, abscesses may form and systemic symptoms of infection may be apparent. Usually costochondritis requires no special treatment and resolves spontaneously after two weeks. Infectious costochondritis requires antibiotics or surgery. If the pain is severe and affects your life, you can take oral anti-inflammatory and analgesic drugs or go to the hospital for physical therapy.