This document discusses pelvic inflammatory disease (PID), an infection of the female reproductive organs that usually occurs when sexually transmitted bacteria spread from the vagina to the uterus, fallopian tubes, or ovaries. PID is caused by bacterial infections like gonorrhea that enter through the vagina and cause inflammation of the cervix, uterus, fallopian tubes, and ovaries. Symptoms include vaginal discharge, lower abdominal pain, irregular periods, painful sex, and tenderness. Diagnosis involves tests like ultrasound, laparoscopy, or CT/MRI scans. Treatment is usually antibiotics, while more severe cases may require surgery like laparoscopy or salpingectomy (removal of fallopian tubes).