What are the reasons for the absence of menstruation after a miscarriage?

Jun 30, 2025 Source: Cainiu Health

Dr. Zhang Lu

Introduction

In general, possible causes of absent menstruation after a miscarriage may include delayed physiological recovery, psychological factors, endometritis, intrauterine adhesion, premature ovarian failure, etc. It is important to rest adequately after the procedure, avoid excessive fatigue, and ensure sufficient sleep. Maintain good hygiene of the external genitalia to prevent infection. Regular gynecological examinations should also be conducted to detect and address any underlying gynecological conditions in a timely manner.

Generally, possible causes of absent menstruation after a miscarriage may include delayed physiological recovery, psychological factors, endometritis, intrauterine adhesion, premature ovarian failure, and others. If experiencing any discomfort, timely medical consultation is recommended. Detailed analysis is as follows:

1. Delayed Physiological Recovery

A miscarriage can cause a certain degree of damage to the endometrium, which requires time for recovery. Some women may experience slower endometrial recovery due to individual physical differences or the effects of medication or surgery, leading to delayed menstruation. Usually, no treatment is required; however, adequate rest, avoiding excessive fatigue, and ensuring sufficient sleep are recommended.

2. Psychological Factors

After a miscarriage, women often experience excessive worry about their physical recovery and future fertility, which may lead to anxiety. This prolonged anxiety can affect neurotransmitter secretion, causing abnormal secretion of gonadotropin-releasing hormone, leading to ovulation disorders and menstrual cycle irregularities, resulting in absent menstruation. Generally, no medication treatment is required. It is recommended to maintain a pleasant mood in daily life and avoid excessive tension and anxiety.

3. Endometritis

Endometritis may occur due to poor personal hygiene after a miscarriage, leading to bacterial infection and inflammatory damage to endometrial tissue, which may affect its normal function, causing absent menstruation. Symptoms may also include fever, lower abdominal pain, and increased vaginal discharge. Treatment may include medications such as cefuroxime axetil tablets, metronidazole tablets, levofloxacin tablets, and others, under a doctor's guidance.

4. Intrauterine Adhesion

Intrauterine adhesion may result from endometrial damage, intrauterine infection, or low estrogen levels. This adhesion can obstruct the periodic shedding of the endometrium, causing absent menstruation or reduced menstrual flow. Symptoms may also include lower abdominal pain and amenorrhea. Treatment options may include estradiol valerate tablets, medroxyprogesterone acetate tablets, amoxicillin capsules, and others, as advised by a physician.

5. Premature Ovarian Failure

Premature ovarian failure may be associated with unhealthy lifestyle habits, intrauterine surgery, chromosomal abnormalities, and other factors. It can lead to decreased estrogen and progesterone levels, affecting endometrial growth and shedding, resulting in delayed or absent menstruation. Other symptoms may include sweating, mood swings, and vaginal dryness. It is recommended to follow medical advice and use medications such as estradiol dydrogesterone tablets, progesterone capsules, Kuntai capsules, and others to alleviate symptoms.

Adequate rest should be ensured after surgery, avoiding excessive fatigue and ensuring sufficient sleep. Maintain external genital hygiene to prevent infection. Regular gynecological examinations are also recommended to detect and manage potential gynecological conditions promptly, preventing the occurrence of absent menstruation after a miscarriage.

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Under normal circumstances, postpartum adhesions can be prevented through standardized procedures, attention to personal hygiene, a balanced diet, medication interventions, and regular follow-up examinations. The primary cause of intrauterine adhesions after induced labor is damage to the basal layer of the endometrium. Therefore, it is essential to choose a qualified medical institution and have the procedure performed by an experienced physician to avoid excessive curettage or repeated insertion and removal of intrauterine instruments.

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What to do if a pregnancy results in a biochemical pregnancy

Under normal circumstances, a biochemical pregnancy, also known as biochemical miscarriage, is a type of early natural abortion. Most cases do not require special treatment, but scientific management is needed to promote recovery. Common management approaches include timely examination, monitoring changes in blood HCG levels, paying attention to rest and bleeding care, adjusting diet and emotional well-being, and investigating causes of recurrent biochemical pregnancies.

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What causes abdominal pain after medication abortion, and what should be done?

In general, the main causes of abdominal pain after medical abortion include uterine contractions, abdominal chilling, retained products in the uterine cavity, endometritis, and pelvic inflammatory disease. Patients can choose appropriate management methods such as conservative treatment, medication, or surgical intervention based on their specific conditions. In daily life, it is important to stay warm after a medical abortion and avoid exposure to cold; maintain external genital hygiene, and avoid tub baths and unhygienic sexual activity.

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What are the side effects of painless abortion?

Under normal circumstances, painless abortion—as a method of induced termination of pregnancy—may lead to side effects including bleeding, infection, uterine perforation, intrauterine adhesion, menstrual abnormalities, and others. Painless abortion should be performed at a正规 medical institution. After the procedure, it is important to follow medical advice for proper care, such as avoiding tub baths, abstaining from sexual intercourse for one month, and ensuring adequate rest and warmth, in order to reduce the risk of side effects.