Pelvic inflammatory disease (PID) is an inflammatory or infectious condition of the pelvic cavity that can affect the cervix, uterus, fallopian tubes, and ovaries. It is commonly caused by Neisseria gonorrhea and Chlamydia trachomatis. Symptoms may include vaginal discharge, pain during sex, lower abdominal pain, and fever. Treatment involves antibiotic therapy, with hospitalization needed if oral antibiotics are ineffective. Complications can include recurrent PID, ruptured abscess, chronic pain, ectopic pregnancy, and infertility if left untreated.