@the.anatomy.hub2: What Irritates the Sciatic Nerve? — Part 2 This second part explains how sciatic pain can begin in the lower spine. A bulging lumbar disc may irritate or compress a nearby nerve root, causing pain to travel through the buttock and down the back of the leg. Educational content only. Not medical advice. #Sciatica #SciaticNerve #DiscBulge #HerniatedDisc #LowerBackPain