However, ovulation dysfunction can occur with apparently regular cycles. Sometimes women may notice an increase in body and facial hair, acne, milk secretion from her breasts etc. Here, the problem is in the ovary itself e.g. The ovaries were surgically removed. The ovaries were damaged by radiotherapy or chemotherapy treatment for cancer. The woman was born without ovaries.
Some women have polycystic ovaries.
Secondary Here, the ovaries are not the problem, but the lack of hormones released from the pituitary gland or hypothalamus . Recent great gain or loss of weight. Excess production of the hormone prolactin . Disturbances involving the thyroid gland and the adrenal glands .