Menstruation—or your period—typically occurs monthly and can last anywhere from two to eight days. If your cycle is irregular, painful, or heavy, it is important to know what is causing these fluctuations. Find out more about menses here including how irregularities are managed and treated.

Irregularities and Their Causes

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10 Things That Can Throw Off Your Period

Coping With Premenstrual Syndrome

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6 Self-care Habits That Ease PMS Symptoms

What to Know About Hygiene Products

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How Dangerous Is It to Leave a Tampon in Your Vagina?

Explore Menstruation

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What Is Premenstrual Syndrome (PMS)?
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Harmful 'Forever Chemicals' Found in Some Period Products, New Research Shows
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Menstrual Discs Outperform Pads and Tampons for People With Heavy Periods, New Study Shows
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Exercises to Do and Avoid While Working Out During Your Period
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4 Surprising Period Signs
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What Actually Happens When You Skip a Period With Birth Control?
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How Many Days Should Pass Between Periods?
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What Is the Period Flu?
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Even People Who No Longer Menstruate Saw COVID Vaccine-Related Period Symptoms, Research Shows
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What It's Like to Have a Period as a Non-Binary Person: 'We Need to Stop Associating Periods With Womanhood'
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5 Natural Remedies for Period Aches and Pains That Actually Work
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Dangers of Using a Vacuum to Lessen or Stop Your Period Flow
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Messed Up Pandemic Periods? Here's Why That's Not Unusual
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This Company Is Sparking Controversy for Offering 'Menstrual Leave'
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This Woman Says She Was Kicked Off Her Flight for Having Period Pain