A case report of an extremely rare association of ankylosing spondylitis with pachydermoperiostosis.

This is the first case report in Iraq describing the combination of pachydermoperiostosis and ankylosing spondylitis. We report this interesting association in a 23-year-old male who presented with inflammatory back pain, coarse facial features, clubbing, signs of enthesitis, limitation of spine movement, and clinical and radiographic signs of sacroiliitis.