"early symptoms of ankylosing spondylitis"

Stiff Back Every Morning? Ankylosing Spondylitis: Younger People Must Not Let Their Guard Down Either

Have you ever opened your eyes in the morning feeling as if your back down to your waist had stiffened like a wooden log? You might have brushed it off casually, thinking, 'Did I overdo it yesterday?', but it could actually be a very important signal sent by your body.