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Do you think your period is giving you a fever? This is something you should take very seriously. The following conditions can cause fevers during menstruation.

Toxic Shock Syndrome

Toxic Shock Syndrome or TSS is a very rare but life-threatening condition caused by some bacterial infections, primarily Staphylococcus aureus. While TSS can have varying underlying causes, it is particularly associated with the use of tampons. In fact, if you read the package insert that accompanies your tampons, it will warn you about this condition. 

Symptoms of Toxic Shock Syndrome include low blood pressure, nausea and vomiting, dizziness, confusion, a muscle ache, headache, red eyes, mouth and throat, and seizures. Another prime symptom of Toxic Shock Syndrome is a high fever. 

Because Toxic Shock Syndrome is a frightening condition that can quickly result in shock, kidney failure and even death, and because it has closely been linked to the use of tampons, TSS is something every woman should be familiar with. In order to prevent TSS, use tampons of the lowest absorbency level that work for you, change them frequently (ideally at least every four hours, and never leave a tampon in for longer than eight hours), or consider opting for sanitary pads or menstrual cups instead.

TSS shouldn't make you scared of tampons in general — it is important to note that the tampons sold in the US do not incorporate the materials that are associated with TSS any more. It is still something to be aware of, however, and TSS is the first thing any woman who runs a sudden high fever after using tampons should think of, especially if she also has the other symptoms mentioned above. Anyone experiencing these symptoms after tampon use is completely justified in visiting the Emergency Room immediately.


Endometriosis is a reproductive condition in which the tissue that normally only lines the uterus — the endometrium — is also found in other locations, such as the fallopian tubes, the ovaries, and the cervix. Like the lining of the uterus, these tissues will respond to the hormones that regulate the menstrual cycle. The formation of cysts and pain are prime complications of endometriosis, along with infertility. 

Women who suffer from endometriosis may also experience a range of symptoms before and during their periods. They include heavy abdominal cramps, diarrhea, vomiting and nausea and — a low grade fever during menstruation. Should you recognize these symptoms, it is time to make an appointment with your OBGYN for a full evaluation. 

Pelvic Inflammatory Disease

Pelvic Inflammatory Disease, or PID, is a serious infection of the female reproductive system that, if left untreated, can lead to chronic abdominal pain and infertility. Primarily caused by a range of sexually transmitted diseases including chlamydia, PID can also be caused by other infections — such as those that you pick up after childbirth or a D&C, or after a surgical procedure within the reproductive tract. 

The main symptom of Pelvic Inflammatory Disease is abdominal pain, which can be very mild ranging to very severe. Women with PID may also experience nausea and vomiting on and off, along with menstrual irregularities including bleeding between periods. Fever — which can also occur during periods — can also be a symptom of PID. 

The possibility of developing PID is an excellent reason to submit yourself to regular STD testing: in their beginning stages, the STDs that lead to PID can be cured with a course of antibiotics. Later on, treatment becomes much more complicated and less successful. 

What Should You Do If You Have A Fever During Your Period?

Let's be clear: it's possible that your fever and your period aren't related in any way. If you get your period while you have the flu and happen to have a fever, there is no reason to panic. If, however, the fever is specifically associated with your menstruation and you also have additional pelvic symptoms, you should take those very seriously and seek medical help.

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