Pelvic inflammatory diseases (PID) include salpingitis and endometritis. They usually result from the infection of upper genital tract by pathogens ascending from the cervix or the vagina. Since the clinical signs of uncomplicated forms are frequently mild or misleading, diagnosis require other exams such as microbiology (samples from the cervix and, if applicable, from the pelvis) and laparoscopy. Acute complications (pelvic abscesses, peritonitis) can occur, that call for both surgical drainage and antibiotics. Pelvic sequelae with permanent tubal alterations due to immuno-allergic reactions can also happen, that lead to chronic pelvic pain and infertility. Treatment consists in broad-spectrum antibiotics by oral route, combined with non steroid anti-inflammatory drugs. Atraumatic laparoscopic procedure can also be performed.