The symptoms are usually caused by higher levels of prolactin in the blood. Symptoms may also be caused by the pressure of the tumor on surrounding tissues, glands and nerves.
The most common symptoms are absence of menstrual periods and abnormal production of breast milk. Other symptoms may include reduced sex drive, impotence, vaginal dryness, infertility, headaches, disturbed vision, brittle bones (osteoporosis), mood changes and depression.
Causes and Risk Factors
Prolactinomas can occur in both men and women.