Juvenile ankylosing spondylitis: the criteria approach

Juvenile ankylosing spondylitis (UAC) is a chronic progressive disease characterized by nonspecific clinical picture at the onset and late spine involvement. The article presents a clinical case of UAC progressed with migratory pain syndrome after an upper respiratory tract infection, early-onset spine lesions and ineffective therapy by non-steroidal anti-inflammatory drugs in patient of 11 years old. The criteria approach to the diagnosis of UAC is discussed.