Transcranial Magnetic Stimulation for Facial Pain

Complex oro-facial pain is a poorly diagnosed and poorly treated cause of significant suffering and disability. This study will explore the ability of fMRI to identify patients with complex oro-facial pain who respond to transcranial magnetic stimulation therapy. Specific Aims: 1. To establish baseline patterns of MRI in patients with chronic oro-facial pain without a definitive etiologic diagnosis. 2. To estimate the rate of treatment success of transcranial stimulation of the primary motor cortex (M1) in these patients. 3. To identify post-treatment MRI patterns that are associated with treatment success.