A 36-year-old woman reported occasional pain in both the left and right posterior regions of the mandible over the preceding 5 months. The pain was of sudden onset but dull in nature and mild in intensity. It originated in the premolar region just above the lower border of the mandible and radiated to the ipsilateral lip and the ears. The pain was intermittent, had no aggravating factors and sometimes disturbed the patient's sleep. The patient had consulted various medical practitioners and dentists over the previous 4 months. Analgesics and antibiotics had been prescribed, but there had been no permanent relief of the pain. She had also taken carbamazepine 200 mg 3 times daily for 2 months but without permanent relief.
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