This document defines pelvic inflammatory disease (PID) and discusses its causes, risk factors, clinical presentation, diagnosis, management, and prevention. PID is caused by bacteria like Neisseria gonorrhoeae and Chlamydia trachomatis spreading from the vagina or cervix into the female reproductive organs. It presents with symptoms like lower abdominal pain and can lead to long-term complications if not treated properly with antibiotics. Prevention through screening, treatment of sexually transmitted infections, and partner notification is important to reduce the burden of PID.