Early symptoms of ankylosing spondylitis might include back pain and stiffness in the lower back and hips, especially in the morning and after periods of inactivity. Neck pain and fatigue also are common. Over time, symptoms might worsen, improve or stop at irregular intervals. The areas most commonly affected are:  The joint between the base of the spine and the pelvis. The vertebrae in the lower back. The places where tendons and ligaments attach to bones, mainly in the spine, but sometimes along the back of the heel. The cartilage between the breastbone and the ribs. The hip and shoulder joints. 
early symptoms ankylosing spondylitis include back pain stiffness lower back hips  especially morning periods inactivity  neck pain fatigue common  time  symptoms worsen  improve irregular intervals  areas commonly affected are:  joint base spine pelvis  vertebrae lower back  places tendons ligaments attach bones  mainly spine  back heel  cartilage breastbone ribs  hip shoulder joints
ankylosing spondylitis