I've had sciatica since I was 15 (I have scoliosis, 40° so my spine looks like the Zorro signature and many discs are misplaced and worn). Unfortunately when it hits you there isn't much to be done. Strong pain killers, anti inflammatory drugs, relax, some slow walks if you can walk and wait until it gets better. Sometimes it hits you for a week, sometimes it lasts for a year. If it gets too crippling, disc surgery.