Menses

  • (noun): The monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause.
    Example: "A woman does not take the gout unless her menses be stopped"--Hippocrates
    Synonyms: menstruation, menstruum, catamenia, period, flow

Some articles on menses:

PMS - Diagnosis
... system must be excluded, including dysmenorrhea (pain during menses, rather than before it), endometriosis, perimenopause, and adverse effects produced by oral ... of symptoms from cycle days 5 to 10 to the six-day interval before the onset of menses ... symptoms during the five days before menses in each of three consecutive cycles, and must not be present during the pre-ovulatory part of the cycle (days 4 through 13) ...
Premenstrual Syndrome - Diagnosis
... excluded, including dysmenorrhea (pain during menses, rather than before it), endometriosis, perimenopause, and adverse effects produced by oral contraceptive pills. 10 to the six-day interval before the onset of menses ... (physical) symptoms during the five days before menses in each of three consecutive cycles, and must not be present during the pre-ovulatory part of the cycle (days 4 through 13) ...