sciatica effective treatments??????

Hi there you lovely people, I was just wondering if any of you have ever suffered with chronic sciatica problems, mine has been troubling me for over 3 months now. and not even Bu-trans (morphine) patches have helped. My GP has now put me on oral morphine, but even that has been having no effect on my pains. Then 2 nights ago, I was awake all night with bad spasms in both legs and both arms, not …sure if its a relapse or maybe start of flu, as i have been having high temperature and bad headache. Anyway my question being, if you have suffered like this with sciatica probs, what treatment did you find to be effective? Any thoughts or ideas would be very much appreciated, many thanks in advance, love to you all,