Brown discharge in the underwear can be seen in normal people, but may also be ovulation bleeding, cervicitis and other diseases caused by, you should consult a doctor in a timely manner, to clarify the cause of the disease. 1. Physiological conditions: pregnant women in the vicinity of the menstrual period in the underpants have brown discharge, should be considered to be caused by menstruation, such people should pay attention to keep warm, usually without special treatment. 2. Ovulatory bleeding: If there is brown discharge in the underwear in the middle of two menstrual periods, it should be considered to be caused by ovulatory bleeding, and part of the population will also have abdominal distension, hidden pain, if it occurs by chance, usually without special treatment. 3. Cervicitis: If there is a brown discharge in the underwear at the same time the patient also has leukorrhea, pain during sexual intercourse, back pain, then it should be considered to be caused by cervicitis, which can be treated with azithromycin under the guidance of a doctor. Brown underwear discharge may also be caused by other reasons, it is recommended that timely consultation, under the guidance of the doctor active treatment.