Disease encyclopedia/Female reproductive & breast
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    Female reproductive & breastChronic inflammatoryICD-10 N80

    Endometriosis

    Tissue similar to the lining of the womb grows outside it — on the ovaries, pelvic lining and bowel — causing painful periods, pelvic pain and sometimes infertility.

    Condition-specific references are below. Individual claims and this page have not been clinically reviewed. Read about this content.

    About 1 in 10 women of reproductive age; diagnosis is often delayed by 7–8 years.

    Affected: Uterus, Ovaries, Pelvic lining

    Causes

    • Retrograde menstruation, immune and genetic factors

    Risk factors

    • Family history
    • Early periods, short cycles, heavy periods

    Symptoms

    • Severe period pain
    • Chronic pelvic pain
    • Pain during sex
    • Painful bowel movements or urination during periods
    • Difficulty conceiving
    • Fatigue

    Diagnosis — tests and examinations

    • Clinical history
    • Transvaginal ultrasound or MRI (endometriomas, deep disease)
    • Laparoscopy with biopsy

    Treatment

    Medicines and medical treatment

    • NSAIDs
    • Hormonal treatment: combined pill, progestogens (dienogest), hormonal IUS
    • GnRH analogues or antagonists (relugolix combination)

    Operations and procedures

    • Laparoscopic excision or ablation
    • Removal of ovarian endometriomas
    • IVF for infertility
    • Hysterectomy for severe disease when fertility is not desired

    Self-care, home remedies and lifestyle

    • Heat and exercise
    • Pelvic physiotherapy
    • Support groups

    Possible complications

    • Infertility
    • Ovarian cysts (endometriomas)
    • Adhesions
    • Bowel or bladder involvement

    Prevention

    • None known

    Outlook

    Chronic but manageable; symptoms usually improve after menopause.

    When to see a doctor

    See a doctor if period pain stops you doing normal activities.

    Sources and further reading

    These sources cover this condition. They have not been checked against every statement on this page.

    • Endometriosis — MedlinePlus (U.S. National Library of Medicine)

    Related conditions

    Pelvic inflammatory diseaseUterine fibroidsOvarian cancerMenopause symptomsBreast cancerCervical cancer

    Educational overview, not medical advice. Treatment varies by person and location. Consult a qualified health professional for diagnosis or care. Read our content and model notes and privacy information.

    Affected: Uterus, Ovaries, Pelvic lining

    See it in 3-D

    UterusOvary (left)

    Anatomy

    • Uterus
    • Ovary

    On this page

    • Causes
    • Risk factors
    • Symptoms
    • Diagnosis — tests and examinations
    • Treatment
    • Complications
    • Prevention
    • Outlook
    • When to see a doctor
    • Sources