If a woman’s discharge is blood brown, if she is ovulating, it may be due to fluctuations in estrogen levels during follicular rupture, resulting in a small amount of endometrial exfoliation, which causes a small amount of bleeding. 2, in addition, blood brown discharge may also be a sign of disease, such as endometrial cancer or cervical cancer, or cervical polyps, dysfunctional uterine bleeding or cervical erosion. If a woman has just had an intrauterine device, she may also have a small amount of bleeding. 3. In addition, if an elderly person has a blood-brown discharge, it may be caused by age-related vaginitis.