Hi,I am 39 yo male. I have had back pain for 15 yrs.Hemilaminectomy(sp?)L4-L5 5yrs ago. have had nerve blocks done in past (L5-S1) Just had an mri and was told no surgery needed. having extreme pain 8-9 in lower back and had a nerve block done(L4-L5) . This has lowered the pain quite a bit5-6 but i continue to have the pain and problems with my legs shaking uncontrollably(no sciatica pain), i can try to hold the leg muscle still but can still see muscles fluttering. the legs shaking was happening prior to the nerve block, but never b4 this round of back pain. While in the hospital on several medications(legs were shaking uncontrollably and was given IV injection of Dilaudid which stopped the shaking within minutes. the DR. that performed the block prescribed Percocet, which has made no change. So my question is where the leg shaking is coming from (is just just pain?) and what are suggestions for controlling it? The leg shaking/discomfort highly limits any amount of sleep that i can get.