Sciatica with numb leg, itchy foot, what to do?

Stretching. Many times acute sciatic pain will resolves after stretching the area abit. The muscles will loosen up and help resolve pain. If not, then consider further imaging studies to see which exact nerve in your spine is getting pinched for further treatment options. The itching is a possible sign the sciatica might be improving.
Sciatic Nerve. Consult either a neurologist or orthopedic spine surgeon. May need injections.