Fever as a symptom of endometriosis

How common is the symptom Fever among people with endometriosis?

25,87% of people with endometriosis reported Fever as a symptom of endometriosis in our survey.

How common is the symptom Fever among people with endometriosis compared to the non-affected group?

0,46% of people with endometriosis suffer from the symptom Fever very strong compared to a prevalence of 0,00% among non-affected individuals.
The following table shows the symptom Fever in people with endometriosis compared to non-affected individuals. The scale ranges from 1 (not at all) to 5 (very strong).

Symptom Fever in endometriosis - comparison with control group

Fever in endometriosis
(n = 1724)
74,13%
12,65%
9,16%
3,60%
0,46%
Fever in non-affected individuals
(n = 159)
91,82%
6,29%
0,63%
1,26%
0,00%

Tabular comparison of the prevalence of Fever

Symptom severity Endometriosis Non-affected Comparison
not at all 74,13% 91,82% -17,69%
slightly 12,65% 6,29% 6,36%
moderate 9,16% 0,63% 8,54%
strong 3,60% 1,26% 2,34%
very strong 0,46% 0,00% 0,46%

Symptoms that could be related to Fever

Based on the datasets, we calculated the Kendall correlation. The following symptoms could be related to Fever.

Symptom name Correlation
Chills weak correlation (28,00%)
Nausea weak correlation (20,00%)
Fainting weak correlation (20,00%)
Numbness in legs weak correlation (20,00%)

Fever in endometriosis

Fever is not a disease in itself but a symptom that can occur in many different illnesses. The presence of fever alone is therefore not an indicator that you have endometriosis. However, if you regularly experience fever spikes around the time of your period, they may be caused by endometriosis or by a particular variant of it. This variant, adenomyosis, is a distinct condition. However, 50 percent of women with adenomyosis are also affected by endometriosis.

Endometriosis is characterized by growths of uterine-like tissue occurring outside the uterus. These endometriotic lesions are found primarily on the pelvic organs, but can also occur on the bowel, the diaphragm, and even the lungs, heart, and brain. In adenomyosis, cells resembling the endometrium grow into the uterine wall, meaning the uterus itself is affected by the growths. These growths are subject to the hormonal cycle, initially enlarging and then bleeding. If the blood cannot be drained from the body, it remains in the tissue or bleeds into the abdominal cavity. There, it can lead to inflammation, adhesions, and scarring, and even to the formation of cysts.

These recurrent inflammatory processes can cause perimenstrual fever spikes, meaning around the time of your period. In those with adenomyosis, fever spikes can sometimes reach up to 40°C. However, even if you have “only” endometriosis, you can still be affected by these fever spikes.

Acute fever occurring in the context of endometriosis may also have another cause: if a cyst ruptures, it can lead to severe inflammation and associated fever. An acute fever spike that cannot be explained by an infection or a known chronic condition should be evaluated by a doctor.

Did you know that you can also have a big influence on endometriosis symptoms yourself? In the Endo App you learn self-management techniques for endometriosis and find many interactive exercises to relieve symptoms.