What are the causes of amenorrhea?

Patient's question:

No

Doctor's answer:

Amenorrhea can be classified into:
1) Congenital absence of the uterus or uterine malformation
2) Postnatal endometrial damage
3) Endometrial unresponsiveness.
Ovarian amenorrhea can be classified into:
1) Congenital absence of the ovaries or ovarian malformation (less common).
2) Ovarian destruction, such as: surgery, radiation therapy, inflammation, or tumors that cause ovarian destruction leading to amenorrhea.