Research on premenstrual syndrome indicates that fewer than 5 percent of women have PMS symptoms predictably over their cycles.

Question

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Research shows that while many women experience some symptoms of PMS, only a small percentage, less than 5%, have symptoms that are severe and consistent enough to be classified as premenstrual dysphoric disorder (PMDD), which is a more severe form of PMS.

Research on Premenstrual Syndrome Indicates That Fewer Than 5 Percent