What is it?

Premenstrual syndrome (PMS) is the physical and mental symptoms that happen each menstrual cycle. The happen during the luteal phase which is the time between when a woman has ovulated and the period starts. As many as two in five women will have these symptoms. It can happen at any age but is more common in older years. Women who have PMS are at a higher chance of having a mood disorder during menopause.
 
Premenstrual dysphoric disorder (PMDD) is a stronger form of PMS. It symptoms of anger, irritability, and internal tension during the luteal phase. This can distress for women and affect daily functioning. Less than eight percent of women will have PMDD.