traditional name for sciatica/ low back pain in japanesse.

Hey guys! Could you share with me traditional term, phrase describing sciatica in japan tradition? For instance in german it would be hexenschoss, elf arrow in traditional english belifies. Thanks!:)

https://www.reddit.com/r/japan/comments/10r2rhs/traditional_name_for_sciatica_low_back_pain_in/