A Study of Women Receiving Standard of Care (SOC) for the Treatment of Pelvic Pain Due to Suspected or Confirmed Endometriosis and the Impact on the Disease or Symptom Progression.

* Women of reproductive age (between their first menstrual cycle and before onset of menopause). * Women who have experienced chronic pelvic pain (CPP) and/or dysmenorrhea (DYS) for at least 6 months prior to enrollment without symptom improvement with non-steroidal anti-inflammatory drugs (NSAIDs) or hormone/medical treatment. * Women with suspected or confirmed endometriosis (EM) at time of enrollment. * Women with CPP and/or DYS impacting daily activities as determined by their treating physician. * Able to read, understand and respond to patient questionnaires. * Willing to sign a patient authorization and/or informed consent form (ICF) and agree to disclose personal health information. NOTE: For pediatric patients, parental/guardian assent/ICF is also required.

* Women with chronic pelvic pain (CPP) and/or dysmenorrhea(DYS) for reasons other than endometriosis (EM). * Women who have had a hysterectomy and/or bilateral ovary removal (oophorectomy). * Women who are pregnant or planning to become pregnant. * Women currently using assisted reproductive technologies such as in vitro fertilization (IVF). * Women with a history of, or current malignancy (with or without systemic chemotherapy) with the exception of basal cell carcinoma of the skin. * Women who are currently participating in an interventional clinical trial.