What causes brown discharge after menstruation has ended?

Brownish discharge after menstruation ends may be a normal physiological occurrence or could indicate a pathological condition, and is associated with factors such as endometrial polyps and uterine fibroids. Further medical evaluation is necessary to establish a clear diagnosis, followed by appropriate treatment. The details are as follows:

I. Physiological Causes

If menstrual cycles are normally regular and abnormal discharge occurs only occasionally, it may be due to ovulation bleeding. During ovulation, hormonal levels drop temporarily, which can lead to slight bleeding. This typically does not require specific treatment. However, adequate bed rest is recommended, and symptoms usually resolve spontaneously after the ovulation period.

II. Pathological Causes

1. Endometrial Polyps

Once formed, polyps occupy space within the uterine cavity. When menstruation occurs, the endometrial tissue around the polyp cannot shed completely, resulting in increased vaginal discharge that appears brownish. It is recommended to follow medical advice for treatments such as dilation and curettage (D&C) or hysteroscopic polypectomy, along with appropriate postoperative care.

2. Uterine Fibroids

Uterine fibroids can cause abnormal sex hormone levels, disrupting the menstrual cycle and leading to symptoms such as heavier menstrual flow and prolonged periods. Some patients may experience small amounts of brownish discharge between periods. In such cases, consultation with a physician regarding treatment options—including hysteroscopic, abdominal, or vaginal approaches—is advised. These procedures can remove fibroids while preserving uterine function.

In addition, conditions such as endometrial cancer must also be considered. Prompt identification, accurate diagnosis, and immediate initiation of treatment are essential once such diseases are suspected.