What are the main causes of cervical erosion?

Cervical erosion is cervical columnar epithelium ectopic, that is, the main cause of cervical columnar epithelium ectopic hormone level changes.

Cervical columnar epithelium ectopic physiological changes, mainly affected by estrogen levels, when the newborn baby girl in the maternal high estrogen influence, cervical columnar epithelium will expand outward, occupy a part of the cervical vagina, when the maternal estrogen effect disappears, columnar epithelium will retreat into the cervical canal. Adolescence and fertility seek female estrogen levels rise, columnar epithelium will move outward to the cervical vagina, because the cervical endothelium is thin, the capillaries below will be revealed, red, similar to ulcer surface, but not in the true sense of ulcer, erosion.