Spondyloarthritis is a type of inflammatory arthritis that primarily affects the spine and the joints where the spine connects to the pelvis. It can cause pain and stiffness in the back and neck, and may also lead to changes in posture over time. This condition is often associated with other symptoms, such as fatigue and inflammation in other areas of the body, including the eyes and skin. There are several forms of spondyloarthritis, including ankylosing spondylitis, which is the most common type. The exact cause is not fully understood, but genetics and environmental factors may play a role. Early diagnosis and treatment are important to manage symptoms and prevent complications.