the.com/sciatica

Your spinal nerve filing a formal complaint, straight down your leg.

means A sharp, often radiating pain caused by irritation or compression of the sciatic nerve, running from the lower back through the hip and down the leg.

from Traces back through medical Latin 'sciatica' to the Greek 'ischiadikos,' meaning 'of the hip,' from 'ischion,' the hip joint. The word has been pointing at hip-and-leg trouble since antiquity, long before anyone understood nerves were the culprit — physicians just knew the pain lived in that stretch of the body and named it accordingly.

actual cause
nerve compression, not a muscle problem
usual suspect
herniated disc pressing the sciatic nerve
longest nerve
runs from lower spine to your foot
misleading name
sounds exotic, mostly just sitting too much
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