Steroids in Occipital Nerve Block for Treatment of Headache

2 mL of bupivacaine 0.5% (5 mg/mL) injected at the origin of each bilateral greater and lesser occipital nerves

0.5 mL of lidocaine 1% (10 mg/mL) injected at the origin of each bilateral greater and lesser occipital nerves

0.5 mL of dexamethasone (10 mg/mL) injected at the origin of each bilateral greater and lesser occipital nerves

0.5 mL of normal saline 0.9% injected at the origin of each bilateral greater and lesser occipital nerves

Subjects will receive a total of 12 mL injectate divided equally between the 4 injection sites of the bilateral greater and lesser occipital nerves using the landmark-based technique.