OUTLINE: Patients are given a brief pain inventory (BPI) form to assess their pain upon enrollment in the study. Following a 7 day stabilization period, flecainide is administered. One capsule of flecainide is given twice a day on days 8-10, two capsules are given twice a day on days 11-14 and three capsules are given twice a day on days 15-21. BPI forms are completed on days 8, 15 and 22 to assess neuropathic pain.