Coexistence of Beh et's Disease and Ankylosing Spondylitis: A Case Report

Although overlap syndrome is frequently encountered in rheumatology practice, only a few cases of coexisting Beh et’s disease and ankylosing spondylitis have been reported in the literature. Thus, in this article, we aimed to present a 55-year-old male patient with coexisting Beh et’s disease and ankylosing spondylitis who had HLA-B5 positivity, HLA-B27 negativity, and oral and genital lesions.