etiology of pelvic inflammatory disease
From Wikipedia, the free encyclopedia. Pelvic inflammatory disease or pelvic inflammatory disorder (PID) is an infection of the upper part of the female reproductive system namely the uterus, fallopian tubes, and ovaries, and inside of the pelvis. Often there may be no symptoms.he disease is caused by bacteria that spread from the vagina and cervix. Infections by Neisseria gonorrhoeae or Chlamydia trachomatis are present in 75 to 90 percent of cases.