Spondylitis is a type of chronic inflammation that affects the spine and can also involve the joints between the vertebrae, sacroiliac joints, and in some cases, other parts of the body. Over time, this condition can lead to stiffness, reduced flexibility, and pain in the back and neck. In more severe cases, the chronic inflammation may cause sections of the spine to fuse together, resulting in restricted movement and a hunched posture. Common symptoms include persistent back pain, stiffness that is worse in the morning or after inactivity, fatigue, and discomfort that improves with activity.