How common is the symptom Blood in urine among people with endometriosis?
22,10% of people with endometriosis reported Blood in urine as a symptom of endometriosis in our survey.
How common is the symptom Blood in urine among people with endometriosis compared to the non-affected group?
1,10% of people with endometriosis suffer from the symptom Blood in urine very strong compared to a prevalence of 0,00% among non-affected individuals.
The following table shows the symptom Blood in urine in people with endometriosis compared to non-affected individuals. The scale ranges from 1 (not at all) to 5 (very strong).
| Symptom severity | Endometriosis | Non-affected | Comparison |
|---|---|---|---|
| not at all | 77,90% | 94,34% | -16,44% |
| slightly | 9,63% | 4,40% | 5,23% |
| moderate | 8,47% | 1,26% | 7,21% |
| strong | 2,90% | 0,00% | 2,90% |
| very strong | 1,10% | 0,00% | 1,10% |
Based on the datasets, we calculated the Kendall correlation. The following symptoms could be related to Blood in urine.
| Symptom name | Correlation |
|---|---|
| Bladder infection | moderate correlation (33,00%) |
| Pain during urination | weak correlation (28,00%) |
| Blood in stool | weak correlation (25,00%) |
| Kidney pain | weak correlation (21,00%) |
Blood in the urine can have many different causes. In addition, traces of blood, especially in very small amounts, are not necessarily visible to the naked eye and may only be detectable on urine tests. And especially during your menstrual period, it can be difficult to tell where the blood in the urine is coming from. Because of the anatomical proximity between the vagina and the external opening of the urethra, the blood in the urine may simply be menstrual blood. Nevertheless, blood in the urine can be a symptom of endometriosis. This is the case when the bladder or the ureters are affected by endometriosis. In that case, clusters of cells similar to those that normally line only the inside of the uterus grow in the area of the bladder and/or the ureters, or even the kidneys.
With endometriosis, blood in the urine can occur whenever endometriotic lesions are found not only on the outside of the bladder, ureters, or kidney, but also within these organs. Like the lining of the uterus, endometriotic lesions grow under the influence of the hormonal cycle and then bleed again at the end of the cycle. This blood is then eliminated from the body together with the urine.
Bladder endometriosis causes various symptoms that can easily be confused with those of a urinary tract infection: In addition to blood in the urine—which occurs in only about 20 percent of women with bladder endometriosis—there may be lower abdominal pain, frequent urination of small volumes, increased urinary urgency, pain with a full bladder, and pain during urination. Whether endometriosis is actually the cause of blood in the urine can be determined by an ultrasound examination and an MRI. If the endometriotic lesion is located within the bladder, a cystoscopy can be used for a detailed diagnostic evaluation.