Tailbone pain (coccydynia) is an inflammation, dislocation or fracture of the bottom tip of the tailbone, called the coccyx, which typically causes constant pain and tenderness in the buttocks area. The pain is acute and will generally feel worse when sitting or doing any activity that puts pressure on the tailbone. The condition is more common in women than men and may be caused by an injury (like a fall), giving birth or sitting for a very long period of time. There have also been rare cases when an infection or tumor can caused this condition. In most cases, coccydynia spontaneously occurs.