The main cause of pelvic inflammatory disease is that the pelvic tissues are infected by various pathogens.
When the patient’s immune function declines, if the patient is infected by various pathogens, the pathogens cause inflammatory damage to the pelvic tissues, the body’s immune response can not effectively resist the invasion of the body’s pathogens, which may cause inflammatory lesions in the local tissues of the pelvic cavity.
Common pathogens that cause pelvic inflammatory disease include Staphylococcus aureus, Mycoplasma, Streptococcus haemolyticus, Neisseria gonorrhoeae, anaerobic bacteria, Chlamydia trachomatis and so on. These pathogens can enter the pelvis retrogradely through the vagina, cervix, and uterus to cause pelvic infection, and can also cause pelvic inflammatory disease through blood circulation transmission, direct spread, and lymphatic circulation transmission.