Adenomyosis generally refers to adenomyosis of the uterus, which, if left untreated, may cause dysmenorrhea, anemia, infertility, miscarriage, and pressure symptoms. 1. Dysmenorrhea: It is a common symptom of adenomyosis. If left untreated, it can lead to progressive dysmenorrhea that gradually worsens. The pain is located right in the middle of the lower abdomen and often starts 1 week before menstruation until the end of menstruation. 2. Anemia: Adenomyosis can cause prolonged menstruation and increased menstrual flow. Patients may suffer from anemia due to excessive blood loss during menstruation, which may cause dizziness, fatigue and other discomforts. 3. Infertility: Adenomyosis causes fibrosis of the whole myometrium, the uterus becomes hard and less stretchable, thus affecting the blood flow of the myometrium and the fertility of the patient. 4. Miscarriage: If the patient develops adenomyosis during pregnancy and it is not treated in time, it may cause miscarriage and other situations. 5. Compression symptoms: after the uterus enlarges due to adenomyosis, it will also compress the surrounding organs, leading to bladder compression symptoms, such as frequent urination, urinary urgency, or compression of the intestinal tract, leading to constipation and other symptoms. Adenomyosis should be treated promptly and in accordance with the doctor’s instructions to avoid aggravation of the condition.