Coccydynia is a type of lower back pain felt around the last bone at the base of the spine (known as the coccyx or tailbone).
The pain of coccydynia can range from mild to severe and is usually worse when:
Some people can only tolerate sitting in the same position for a few minutes before having to move to relieve the pain. The pain in and around your coccyx can sometimes make it very difficult to carry out everyday activities, such as driving, bending over or sitting down. It may seem odd, but sitting on a soft surface may be more painful than sitting on something hard. This is because sitting on a soft surface places most of your weight on your coccyx rather than on the hard bones below your pelvis.
As well as pain in your coccyx, other symptoms of coccydynia may include:
If you have coccydynia, the pain in your coccyx can also make it difficult to sleep comfortably at night. You may need to keep changing positions while lying in bed.
Coccydynia can occur when something damages the coccyx or surrounding area, such as:
In around a third of cases of coccydynia, no obvious cause can be found, although age-related “wear and tear” may play a part.