Why is the discharge brown during the final days of menstruation?
Jul 06, 2022
Source: Cainiu Health
Dr. Lv Aiming
Introduction
During the last few days of menstruation, the discharge may appear brownish, primarily due to decreased menstrual flow. Blood trapped in the multiple vaginal folds may not be expelled promptly, causing the blood to darken—appearing brown or even black. If no other symptoms are present, this is generally not a cause for concern.
During menstruation, maintain good personal hygiene: wash the external genitalia with warm water, change undergarments frequently, and keep the external genital area clean and dry. Avoid sexual intercourse and sitz baths (pelvic baths). Engage in moderate physical activity to facilitate smooth expulsion of menstrual blood.
A small number of women experience a dark brown coloration of menstrual blood toward the end of their period. However, this change does not affect the regularity or volume of menstruation. So, what causes brown discharge during the final days of menstruation?
What Causes Brown Discharge During the Final Days of Menstruation?
Brown discharge during the last few days of menstruation is primarily due to reduced menstrual flow. As blood stagnates in the vaginal folds and is not expelled promptly, it oxidizes and darkens—appearing brown or even black. In the absence of other symptoms (e.g., pain, odor, or abnormal bleeding), this is generally considered benign.
During menstruation, maintain good personal hygiene: wash the external genitalia daily with warm water, change undergarments frequently, and keep the perineal area clean and dry. Avoid sexual intercourse and sitz baths (pelvic baths). Engage in moderate physical activity to facilitate smooth menstrual flow. If brown discharge persists for an extended duration, consult a healthcare provider after your period ends—or on days 3–5 of the next menstrual cycle—for evaluation, including sex hormone panel testing (six hormones) and gynecological ultrasound, to identify any underlying cause and initiate appropriate treatment.
If brown menstrual discharge recurs frequently, in addition to conventional Western medications, you may also follow your physician’s guidance to take traditional Chinese medicine (TCM) formulations that promote blood circulation and resolve stasis—such as Huo Xue Hua Yu Capsules or Wu Ji Bai Feng Wan—to improve microcirculation and assist in clearing retained blood, thereby regulating menstrual function. Additionally, ensure adequate warmth during menstruation to prevent cold-induced dysmenorrhea. We hope this information is helpful. Wishing you optimal health and well-being!
