Frequent female masturbation but never entering the vagina does not cause fallopian tube blockage.

Patient's question:

No

Doctor's answer:

Easily leads to vaginitis, cervicitis, endometritis, and tubulitis. In severe cases, it can also cause peritonitis, sepsis, and other repeated inflammatory damage. Both the tubal mucosa and muscle layer can be traumatized, leading to scar formation, ciliary mucosal necrosis, ultimately resulting in tubal obstruction and impaired peristalsis.