'Period flu' is a more 'severe' form of PMS. Should you be concerned? - USA TODAY

Most people are familiar with PMS, but some women are dealing with a more severe batch of symptoms known as the "period flu." What is it?

Most people are familiar with the cramps and irritability preceding an oncoming period. But some women have reported a more severe version of PMS known as the "period flu." Though it's not a legitim… [+3340 chars]

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