[Infectious proctitis and perianal disease: a gaze beyond inflammatory bowel disease].

Infectious proctitis by sexually transmitted diseases are increasing in incidence and should be considered in homosexual patients with rectal symptoms. In this case, we show a patient with proctitis and perianal disease caused by Chlamydia trachomatis that could be diagnosed as another anorectal disease such as inflammatory bowel disease if the clinical history is not taken into account. A high level of suspicion is crucial, in order to avoid an incorrect diagnosis, delayed antibiotic therapy and the development of complications.