What is PMS?

    Researchedby:
    Marina Shkayeva

    Fact-checked

    by:

    Mike Murray
    Last Updated: October 25, 2023

    Premenstrual syndrome, or PMS, is a group of symptoms that start one to two weeks before menstruation. Most women have at least some symptoms of PMS, and the symptoms go away after their periods start. For some women, the symptoms are severe enough to interfere with their lives, which is a type of PMS called premenstrual dysphoric disorder (PMDD).[1]