The leading symptom is pain in the lower abdomen. It is usually cycle-dependent and intensifies during menstrual bleeding (dysmenorrhea). Depending on the location, endometriosis can also manifest itself as pain during sexual intercourse, gynaecological examinations or bowel movements.
Important indications of endometriosis are provided by a specific gynaecological examination, cysts and the patient's medical history. The final diagnosis can be made only by laparoscopy and histological examination of the lesions.