Initial diagnosis of coccydynia usually requires radiographs. Technicians may observe plain radiographs to find fractures, dislocations, abnormal curvature, or bone spurs. Magnetic resonance imaging or MRIs can also help identify whether the pain originates at the coccyx, or if it begins in the lumbar region. In some instances, a physician may observe the patient’s response after an injection of local anesthetics. This can allow a physician to determine from where the pain originates without using expensive scans.

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