Premenstrual syndrome (PMS) is a combination of physical and emotional symptoms that many women experience after ovulation and before the start of their menstrual period. PMS symptoms can range from mild to severe and can include mood swings, tender breasts, food cravings, fatigue, irritability, depression, bloating, headaches, and muscle aches. Some women may experience a more severe form of PMS called premenstrual dysphoric disorder (PMDD), which can include symptoms such as depression, mood swings, anger, anxiety, feeling overwhelmed, difficulty concentrating, irritability, and tension. PMDD is much less common than PMS. The exact cause of PMS is unknown, but it is thought to be related to changes in hormone levels during the menstrual cycle. PMS symptoms can be managed through lifestyle changes, such as increasing physical activity, eating a healthy diet, and reducing caffeine and alcohol intake. In some cases, hormonal medicine or antidepressant medications may be prescribed. If PMS symptoms are severe and affecting daily activities, it is recommended to see a doctor.