At 40 years old, menstrual flow is light and dark in color

At age 40, light menstrual flow with dark-colored blood may be caused by conditions such as trichomoniasis vaginitis, endometritis, or pelvic inflammatory disease. Symptoms can be improved through medication. Specific analyses are as follows:

1. Trichomoniasis Vaginitis

Trichomoniasis vaginitis is a common vaginal inflammation caused by infection with Trichomonas parasites. These parasites can disrupt the normal vaginal flora, leading to symptoms such as vaginal odor, increased discharge, and reduced menstrual flow. Patients may take medications such as metronidazole vaginal effervescent tablets or tinidazole tablets under medical guidance.

2. Endometritis

Endometritis occurs when bacteria invade the uterine cavity, causing an inflammatory response in the endometrium, resulting in local congestion, edema, and menstrual abnormalities. Patients may use medications such as Kangfuyan capsules or azithromycin dispersible tablets under medical supervision.

3. Pelvic Inflammatory Disease (PID)

Pelvic inflammatory disease results from bacterial infections causing local inflammation. The inflamed area in the pelvis may lead to symptoms such as decreased menstrual flow and pain. Patients may be treated with medications such as clindamycin hydrochloride injection or erythromycin lactobionate for injection under a doctor's direction.

In addition to the above causes, reduced and dark menstrual flow could also result from uterine fibroids, ovarian tumors, or fallopian tube tumors. It is recommended to undergo regular gynecological examinations, maintain good hygiene practices, and avoid excessive fatigue and mental stress to facilitate early detection and treatment of potential gynecological conditions.