Herniation: Abnormal protrusion of tissue through an opening. QUESTION Nearly everyone has low back pain at some time during their life. See Answer From Back Pain Resources Is Your Back Pain Ankylosing Spondylitis?Exercises for Ankylosing Spondylitis Featured Centers Good and Bad Foods for PsoriasisVideo: Getting Personal on Life With MS Health Solutions From Our Sponsors Shot-Free MS Treatment Your Child and COVID-19