Coccydynia is a medical term meaning pain in the coccyx or tailbone area, usually brought on by sitting too abruptly
One way of classifying coccydynia is whether the onset was traumatic versus non-traumatic. In many cases the exact cause is not known (called idiopathic coccydynia).
Coccydynia is often reported following a fall or after childbirth. In some cases, persistent pressure from activities like bicycling may cause the onset of coccyx pain. Coccydynia due
to these causes usually is not permanent, but it may become very persistent and chronic if not controlled.
Also, coccydynia can be caused by sitting improperly, straining the coccyx.
Rarely, coccydynia is due to the undiagnosed presence of a sacrococcygeal teratoma or other tumor in the vicinity of the coccyx. In these cases,
appropriate treatment usually involves surgery and/or chemotherapy.