PMS (premenstrual syndrome) refers to a variety of physical, emotional, and behavioral symptoms that occur in the luteal phase of the menstrual cycle, typically one to two weeks before menstruation. Common symptoms include bloating, breast tenderness, mood swings, and sadness HealthlineHealthline+1. The exact causes of PMS are not fully understood, but hormonal changes during the menstrual cycle are believed to play a significant role WikipediaWikipedia+1. Treatment options may include lifestyle changes, dietary adjustments, and medications to alleviate symptoms