Ankylosing spondylitis occurring in a patient with Behçet disease after chronic brucellosis infection: A case report and review of the literature.

Behçet disease and ankylosing spondylitis are rarely seen together. This report presents a rare case of ankylosing spondylitis occurring in a patient with Behçet disease after chronic brucellosis infection. Infectious agents have long been considered one of the triggers for autoimmune and autoinflammatory diseases. Therefore, rheumatic processes should be kept in mind, especially in treatment-resistant cases.