7 common symptoms ofankylosing spondylitis (AS)
The symptoms of AS are often similar to other back conditions. That’s why doctors use blood tests and X-rays in addition to looking for these common symptoms to come to a proper diagnosis.
Lower back pain that is worse after rest or sleeping (lasting more than 3 months)
Morning stiffness (typically lasting over 30 minutes but can last much longer)
Pain or stiffness in the shoulders, back, ribs, hips, knees, or feet
Limited range of motion (your ability to move your joints) in your spine, neck, and other joints
Difficulty expanding your chest (like when you take a deep breath)
Symptoms can get better with exercise