This document discusses pelvic inflammatory disease (PID), an infection and inflammation of the female upper genital tract including the uterus, fallopian tubes, ovaries, and surrounding structures. PID is caused by the ascending spread of infection from the cervix and vagina. Common causative organisms include Neisseria gonorrhoeae, Chlamydia trachomatis, and Mycoplasma hominis. Risk factors include being a menstruating teenager, having multiple sexual partners, absence of contraceptive use, history of STDs, and poor socioeconomic status. Treatment focuses on identifying and treating the underlying infectious agents.