Ankylosing Spondylitis (AS) is a chronic inflammatory condition that primarily affects the spine, causing pain, stiffness, and reduced mobility. It can also involve other joints and organs. AS is classified as a type of arthritis and typically begins in early adulthood, more common in men than women. Treatment options include medication to reduce inflammation and manage symptoms, physical therapy to improve flexibility and posture, and regular exercise. Early diagnosis and management are crucial to minimize long-term complications such as spinal fusion and deformity.