Premenstrual dysphoric disorder (PMDD) is a medical condition very similar to premenstrual syndrome (PMS) but with graver symptoms. It also occurs in the 1-2 weeks before your period and can cause you to feel severe irritability, tension, and depression.5% of women in their childbearing years are affected by PMDD. Scientists do not know the exact causes behind PMDD or PMS, … [Read more...] about What You Need To Know About Premenstrual Dysphoric Disorder