While PMS gets a bad reputation there is one other menstrual condition that’s worse for women's health. On one hand 85 per cent of women are affected by Premenstrual Syndrome (PMS) Premenstrual Dysphoric Disorder (PMDD) is a more severe form of PMS that affects 3 to 8 per cent of menstruating women. In PMDD women experience distressed mood and behavioural changes in the premenstrual phase of their menstrual cycle. It’s a new disorder that’s still being researched and that’s why the information too about the syndrome is limited. Cause In a 2017 study done by the National Institute of Health’s