Hello, pain in the tail bone (coccyx) called as Coccydynia is often caused by an injury, but it may occur seemingly spontaneously. There are many causes of tailbone pain that can mimic coccydynia, including sciatica, infection (including shingles of the buttocks), pilonidal cysts, sacroiliitis, and fractured bone (broken tailbone ortailbone fracture). Please consult a orthopedician first to differentiate the cause and for the prescription.