PMS, or premenstrual syndrome, is a combination of physical, emotional, and behavioral symptoms that occur in the days leading up to a woman’s menstrual period. These symptoms can range from mild to severe and can include bloating, cramps, mood swings, irritability, and fatigue. While the exact cause of PMS is still unknown, hormonal changes and chemical imbalances are believed to play a role. PMS can greatly impact a woman’s daily life and relationships, but with proper management and self-care, it can be effectively managed.