What is period flu? Symptoms, causes, and exercises for relief

Feeling bloated, emotional, or crampy before your period is common. But for some people, premenstrual syndrome (PMS) can feel a lot more intense — almost like you’re coming down with the flu. You might feel achy, exhausted, chilled, nauseated, or completely wiped out for a few days every month.

While “period flu” isn’t an official medical diagnosis, the term has become a popular way to describe flu-like symptoms that happen around your menstrual cycle. “There’s a drop in both estrogen and progesterone right before your period, which can trigger inflammation and leave you feeling fatigued and rundown,” says Karina Marquez, a physical therapist with Hinge Health.

But period flu symptoms are temporary, and there are ways to manage them. Gentle movement, adopting sleep hygiene practices, staying hydrated, and doing targeted movements can all help you feel more comfortable during this phase of your cycle.

Here’s what to know about period flu symptoms, including how to alleviate them via holistic strategies such as targeted exercises recommended by Hinge Health physical therapists.

Together, these exercises help improve circulation, reduce muscle tension, and calm the nervous system during your period. Gentle stretching and mobility work may also help relieve cramps, back pain, pelvic tension, and the body aches often come with severe PMS or period flu.

The information contained in these videos is intended to be used for educational purposes only and does not constitute medical advice or treatment for any specific condition. Hinge Health is not your healthcare provider and is not responsible for any injury sustained or exacerbated by your use of or participation in these exercises. Please consult with your healthcare provider with any questions you may have about your medical condition or treatment.

Treatments for period flu

Period flu symptoms often ease up as your hormones stabilize. But simple self-care strategies can help ease discomfort as you navigate through it. These approaches include gentle movement, warm compresses, and even focusing on eating anti-inflammatory foods. Consider these physical therapist-recommended treatments:

• Gentle movement and stretching. Light activity — such as walking, yoga, or mobility exercises — can improve circulation, reduce fatigue, and ease tension. Research suggests yoga may be especially helpful for PMS-related symptoms.

• Rest. Getting enough high-quality sleep can help improve mood, energy, pain tolerance, and stress levels. Sleep is also important for regulating inflammation and helping your body recover during your menstrual cycle. “When you don’t sleep well, your nervous system becomes more sensitive, which can make cramps, body aches, and fatigue feel worse,” says Dr. Marquez. This can create a “pain-sleep cycle,” where pain disrupts sleep, and poor sleep lowers your ability to cope with pain the next day. Prioritizing consistent sleep — ideally seven to nine hours per night — can help break that cycle and reduce period flu symptoms over time.

• Hydrate throughout the day. Staying hydrated may help reduce headaches, bloating, fatigue, and muscle aches during your period. Proper hydration also helps keep muscles and joints working smoothly together, which may ease some of the achiness associated with period flu.

• Eat anti-inflammatory foods. Some research suggests that eating a diet high in saturated fat, sugar and salt can worsen PMS symptoms, including period flu. Dr. Marquez recommends focusing on an anti-inflammatory diet that’s rich in fruits, veggies, lean proteins, nuts and seeds, and foods rich in omega-3 fatty acids such as fatty fish. 

• Take over-the-counter (OTC) medication. Pain relievers such as ibuprofen (Advil, Motrin), naproxen (Aleve), and acetaminophen (Tylenol) can help ease pain so you can do your targeted exercises and stay active when you have body aches from period flu. Other options are topical NSAIDs or pain relief creams. If you have a medical condition or take other medications, check in with your provider to make sure these OTC options are ‌safe to take.

• Apply warm compresses. Moist heat can help to relieve period-flu-related aches and pains, says Dr. Marquez. It can also relax you, especially before bed, to help you sleep.

• Try complementary treatments. Talk to your provider if you’re interested in trying alternative treatments for period flu relief, such as massage, acupuncture, or chiropractic care.

• Ask about TENS therapy. TENS, or transcutaneous electrical nerve stimulation, uses gentle pulses to quiet your pain response and help reduce pain associated with period flu. One option is the wearable device Enso, available through Hinge Health. It’s small, wireless, and portable.

How long does period flu last?

It varies from person to person. Some people notice symptoms beginning shortly after ovulation, while others only feel flu-like symptoms a day or two before their period.

Most symptoms improve once your period starts or shortly afterward.

Tracking symptoms with a period app or journal can help you identify patterns over time. “It can be helpful to know when symptoms tend to show up so you can plan ahead with self-care and recovery strategies,” says Dr. Marquez.

For severe PMS or period flu symptoms, healthcare providers may sometimes recommend hormonal birth control to help regulate hormone fluctuations and reduce prostaglandin production.

When to see a doctor

Period flu symptoms are usually temporary and improve as your menstrual cycle progresses but specific timing can vary for each person. Talk with your healthcare provider if you have unanswered questions or experience:

• Symptoms severe enough to interfere with work, school, or daily life

• Heavy bleeding or severe cramps

• Fever greater than 100.4 F

• Vomiting or diarrhea that won’t stop

• Severe mood changes, depression, or anxiety around your cycle

• Pelvic pain outside your menstrual cycle

PT Tip: Listen to your body

“Gentle movement can help improve period flu symptoms, but this isn’t the time to push yourself through intense workouts,” says Dr. Marquez. “If your body feels fatigued, achy, or run down, respect that. Sometimes lighter movement and extra recovery are exactly what your body needs.”

This article and its contents are provided for educational and informational purposes only and do not constitute medical advice or professional services specific to you or your medical condition.