I suffered through extreme sciatic pain for a bit over a year, was walking with a cane at the worst points. Finally got in to a good PT and within a few days I no longer needed a cane. A few weeks and I was running daily with basically no pain.

I think I did 8 weekly sessions (and at home stretches & exercise) and it has basically stayed gone for the last few years except for when I go too long between my regular runs.

The best part of the PT was the massage and the assisted stretches that put pressure on my low back "opening the hips" fuck those were amazing.