Gnaphalium gnaph.

Pain along the sciatic nerve.
Numbness occasionally takes the place of the sciatica, and then walking is very fatiguing.

Clinical:
Sciatica; intense pains extending to ramifications of the nerve, with feeling of numbness, the numbness sometimes alternating with the pains; these pains extend into the toes; Gnap. has cured rheumatoid pains confined to the toes.