text: Surgical, chemical, or radiofrequency sympathectomy can be used as a last resort in patients with impending tissue loss, edema, recurrent infection, or ischemic necrosis due to complications from<unk><unk>  pain<unk> .
option_0: Complex regional pain syndrome surgery
option_1: Back pain medical therapy
option_2: Back pain surgery
option_3: Spinal stenosis surgery
option_4: Spinal cord compression surgery
option_5: Guillain-Barré syndrome physical therapy
option_6: Spinal stenosis medical therapy
option_7: Scoliosis medical therapy