How would a lumbar sympathetic block help with raynaud's syndrome? very painful raynaud's syndrome.

Sympathectomy: Lumbar sympathetic block stops the sympathetic supply to your lower extremities and stellate ganglion block does the same to the upper extremities. These sympathetic blocks can improve blood flow but there are risks with these procedures with Raynaud's syndrome. Discuss the risks, benefits and alternatives with your doctor and good luck. I hope you find some relief soon.