I have sciatica too and it definitely comes and goes. I think the thing that bugs me the most about it is trying to figure out what caused it. Sometimes I don't even know what I did to make it flare up. I have some exercises I do when it does and it usually takes care of it. Luckily I haven't had to visit a chiropractor in close to a decade for it.
I took some anti-inflammatories to get on stage... and that fixed it quick... but need to keep doing those excercises and stretches. Sigh... when did getting old happen?
No kidding! I never knew just getting up in the morning could be this much work! All the little aches and pains really add up!