Endometriosis is an enigmatic disease characterized by development of endometrial tissue outside of the uterus, causing pain and infertility. This guideline will provide evidence based information concerning diagnosis and treatment of endometriosis. Constructive dialogue should allow patients to be able to trust the advice given by their practitioner as they will be confident that they have and will be able to use this guideline to inform this decision-making process. This guideline has been developed with the aim of providing guidance on endometriosis. The effectiveness of the various treatments as well as their risks and benefits are discussed in relation to their use in the treatment of endometriosis. We wish the information contained in this guideline will help clinicians reach a reasonable and beneficial decision with the up-to-date information.