Many people experience different symptoms when they first start to develop ankylosing spondylitis. Some of the most common early signs include lower back pain, fatigue, stiffness, and difficulty bending or straightening the spine. Other potential symptoms include pain and swelling in the buttocks, shoulder pain, and eye inflammation. Additionally, some people with ankylosing spondylitis may develop ankylosing spondylitis-associated arthritis in the hips, knees, and other joints. It's important to note that symptoms may vary from person to person, and some people may experience no symptoms at all. If you suspect you have ankylosing spondylitis, it's important to visit your doctor as soon as possible for a proper diagnosis and treatment plan.