No symptom is pathognomonic for endometriosis. Main symptoms are pain (chronic pelvic pain, dysmenorrhea, deep dyspareunia, pain on defecation, cyclic pain) and infertility (grade C). There is no relation between rAFS endometriosis classification and symptoms intensity and frequency (grade B). Endometriosic lesions location and symptoms type are related to each other as well as symptoms intensity and lesions deepness or adhesion numbers (grade B). Clinical evidence is the same for infertile endometriosic women (grade C). Screening for depression is required among patients suffering from chronic endometriosic pelvic pain (grade C). Clinical examination includes: 1) retrocervix area inspection as well as upper part of posterior vaginal wall in search for typical bluish lesions (grade B); 2) vaginal examination in search for: a) uterosacral ligaments nodules (grade B); b) pain in uterosacral ligaments extension (grade B); 3) re-examination during menstruation increases its performance (grade B). No biological check-up in endometriosis diagnosis is necessary (grade A). CA 125 increase is related to: endometriomas and deep lesions volume (grade B), surgically treated infertile women prognosis (grade B). Presurgical endometriosis diagnosis is bettered by using diagnosis pattern in selected population (grade B). Rating scales are recommended in diagnosis and therapeutic follow up (grade B). Quality of life scales are useful to evaluate therapeutic efficiency (grade B).