Relationship between premenstrual symptoms and dysmenorrhea in Japanese high school students

To determine the relationship between premenstrual symptoms and dysmenorrhea among Japanese adolescent girls, a total of 1,431 high school students were assessed. Of them, 11.3% were classified with moderate to severe premenstrual syndrome (PMS) and 3.2% with premenstrual dysphoric disorder (PMDD). Eighty-five percent of the girls had dysmenorrhea. The rates of prevalence of PMDD and moderate to severe PMS were increased according to the severity of dysmenorrhea (rs=0.479), showing a correlation between the severity of PMS/PMDD and dysmenorrhea in adolescents.