A severe form of premenstrual syndrome characterized by affective symptoms causing significant disturbances in relationships or social adaptation. Symptoms cease shortly after the onset of menstrual bleeding.经前忧郁症，经前情绪不悦症：严重的经前症候群现象，主要表现在情绪症状，常会造成人际关系的不安或是社会适应不良。症状会在月经来临后很快就结束