Facet syndrome, also known as facet joint syndrome or facet joint pain, is a condition characterized by pain and discomfort originating from the facet joints of the spine. The facet joints are small, synovial joints located between adjacent vertebrae, responsible for guiding and controlling the movement of the spine. Facet syndrome can occur when these joints become inflamed or irritated, often due to wear and tear, trauma, or degenerative changes in the spine.