Chlamydia trachomatis and Neisseria gonorrhoeae are usually the main cause of PID. Data suggest that PID is often polymicrobial. Isolated anaerobes and facultative microorganisms have been obtained from the upper genital tract. N. gonorrhoeae has been isolated from fallopian tubes, facultative and anaerobic organisms were recovered from endometrial tissues. The anatomical structure of the internal organs and tissues of the female reproductive tract provides a pathway for pathogens to ascend from the vagina to the pelvic cavity thorough the infundibulum. The disturbance of the naturally occurring vaginal microbiota associated with bacterial vaginosis increases the risk of PID. N. gonorrhoea and C. trachomatis are the most common organisms. The least common were infections caused exclusively by anaerobes and facultative organisms. Anaerobes and facultative bacteria were also isolated from 50 percent of the patients from whom Chlamydia and Neisseria were recovered; thus, anaerobes and facultative bacteria were present in the upper genital tract of nearly two-thirds of the PID patients. PCR and serological tests have associated extremely fastidious organism with endometritis, PID, and tubal factor infertility. Microorganisms associated with PID are listed below. Rarely cases of PID have developed in people who have stated they have never had sex. Bacteria *Chlamydia trachomatis *Neisseria gonorrhoeae *Prevotella spp. *Streptococcus pyogenes *Prevotella bivia *Prevotella disiens *Bacteroides spp. *Peptostreptococcus asaccharolyticus *Peptostreptococcus anaerobius *Gardnerella vaginalis *Escherichia coli *Group B streptococcus *α-hemolytic streptococcus *Coagulase-negative staphylococcus *Atopobium vaginae *Acinetobacter spp. *Dialister spp. *Fusobacterium gonidiaformans *Gemella spp. *Leptotrichia spp. *Mogibacterium spp. *Porphyromonas spp. *Sphingomonas spp. *Veillonella spp. *Cutibacterium acnes *Mycoplasma genitalium *Mycoplasma hominis *Ureaplasma spp.
medical cause of Peritonitis
complications of Peritonitis
medical cause of Ascites
medical cause of Abdominal pain
complications of Ascites
medical cause of Bowel obstruction
medical cause of Pancreatitis
medical cause of Hematochezia