Coccydynia is pain in the area of the coccyx, or tailbone. The coccyx is a small, curved, V-shaped bone at the bottom of the spine.

The Coccyx
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This condition is caused by an injury or stress that affects the tailbone, as well as the muscles and nerves surrounding it. Examples include:

  • Fall or trauma
  • Pressure and strain, as during childbirth
  • Spinal cyst or tumor
  • Dislocation from injury or obesity, which can cause bones to shift
  • Repeated stress (eg, horseback riding, bicycling, motorcycle riding)