The coccyx is the tailbone. Your child can have tailbone pain from a fall or other injury. Sometimes the cause of pain is not known. A tailbone injury causes pain when your child sits or slumps, especially on a hard seat. Straining to have a bowel movement also can be very painful.
Tailbone injuries can take several months to heal, but in some cases the pain goes on even longer. You can take steps at home to ease your child's pain. In some cases, a doctor injects a corticosteroid medicine into the coccyx to reduce swelling and pain.