It is estimated that 5% - 10% of women may suffer from this disease. The data shows that there is a growing trend. At the meeting held by the National Academy of child health and human development in 1995, it was recognized that the incidence of this disease is 10%, of which 30% - 40% have painful symptoms.
There are more Asians than Europeans. According to the medical report in 1992, Asian women account for 51% of patients, while only 22% of European women. 30% - 40% of infertile women suffer from
endometriosis. Endometriosis is not a newly discovered disease, which has been reported in ancient Egyptian and Chinese literature.
The cause of endometriosis has not been clear. It is generally believed that it is caused by ectopic implantation of the endometrium, and it is also believed that it is caused by the differentiation of coelomic epithelium, heredity, abnormal immune regulation, inflammation, and other factors.
1. Implantation theory
During menstruation, the blood is discharged from the uterus and vagina, but a small part of the blood mixed with the falling endometrial fragments flows into the abdominal cavity from the fallopian tube because of some reasons and is planted on the surface of the pelvic organs to form the endometriosis focus.
Clinically, endometriosis occurs in organs far away from the pelvis, such as lungs, limbs, skin, and muscles, which may be the result of the spread of endometrium through blood circulation and lymph.
2. Genetic and physical factors
Clinical observation found that endometriosis has a certain degree of familial aggregation, and the incidence of some patients may be related to heredity, and physical factors such as obesity, overweight, over height also have a certain relationship. The incidence of patients whose mothers and sisters suffered from endometriosis are seven times more at risk than those without a family history.
