While PMDD and PMS share similarities, PMDD is both much more severe than PMS and less common, affecting an estimated 1% to 8% of people.[1][2] The intense emotional and behavioral symptoms of PMDD are usually what sets it apart from PMS. During the luteal phase, people with PMDD report “not feeling like themselves,” significant psychological distress, difficulty engaging in daily life, and damaged personal and work relationships.[3][4] This does not mean that PMS is not a challenging condition. However, PMDD is life-altering and often devastating without treatment. It is also less likely to respond to lifestyle and herbal interventions when compared to PMS.[5]