What could be the reason for brown discharge after menstruation?

Brownish discharge after menstruation may be caused by factors such as insufficient luteal function, incomplete shedding of the endometrium, gynecological inflammation, cervical lesions, or hormonal imbalances. These conditions can be improved through lifestyle adjustments, medication, or physical therapy. It is recommended to seek medical attention promptly to determine the cause of the condition and follow the doctor's instructions for treatment.

1. Luteal insufficiency

Incomplete atrophy of the corpus luteum during the later stages of menstruation may lead to slight bleeding from the endometrium, which, when mixed with vaginal discharge, results in brownish secretions. It can manifest as prolonged periods or spotting, accompanied by mild lower abdominal pain. It is recommended to assess luteal function through progesterone testing. Follow your doctor’s instructions when using medications such as progesterone capsules or dydrogesterone tablets to regulate your cycle, and avoid overexertion.

2. Incomplete shedding of the endometrium

When menstruation has not completely ended, residual fragments of the endometrium are delayed in being expelled and turn brown after oxidation. It is commonly seen when there is a sudden decrease in menstrual flow or during periods of high mental stress, and may be accompanied by lower back pain. Applying heat to the abdomen can help promote blood circulation. If necessary, traditional Chinese medicines such as Motherwort Granules or Shaofu Zhuyu Capsules can be used under the guidance of a doctor for regulation.

3. Gynecological inflammations

Vaginal or cervical inflammation, which can cause the mucous membranes to become inflamed and damaged, may lead to brown discharge, often accompanied by an unpleasant odor and itching. For bacterial vaginosis, metronidazole vaginal effervescent tablets can be used; for fungal infections, clotrimazole vaginal tablets are appropriate. It is necessary to avoid wearing tight-fitting pants, wash the perineum with warm water daily, and abstain from sexual activity during the treatment period.

4. Cervical lesions

Cervical polyps, erosion, or intraepithelial neoplasia can cause contact bleeding, and the oxidized blood may mix with the vaginal discharge. Malignant lesions must be ruled out through TCT and HPV screening. Polyps can be treated with radiofrequency ablation; for CIN1 lesions, interferon suppositories can be used vaginally. More severe cases require cervical conization.

5. Endocrine disorders

Polycystic ovary syndrome or thyroid disorders can interfere with hormone levels, leading to intermenstrual bleeding. It is manifested as irregular cycles and increased acne; it is necessary to check the six sex hormones and thyroid function. It is possible to take ethinyl estradiol and cyproterone acetate tablets as prescribed by a doctor to regulate androgen levels, and in combination with metformin to improve insulin resistance.

It is important to keep the external genital area clean and dry on a daily basis. Choose pure cotton, breathable underwear and change it every day. Avoid strenuous exercise during menstruation and reduce the intake of cold and raw foods. If the brown discharge persists for more than 3 days or is accompanied by increased abdominal pain, fever, or other symptoms, it is necessary to seek medical attention immediately for an ultrasound examination and tests to identify the underlying cause. Recording changes in the menstrual cycle can help doctors determine the cause of any issues. It is not advisable to use hemostatic medications without professional diagnosis.