The symptoms of hyperprolactinemia in women can vary. When occurring outside of pregnancy or breastfeeding, they may include:
Infertility
Gallactoria (abnormal lactation)
Infrequent or irregular periods
Amenorrhea (disappearance of ovulation periods)
Loss of libido
Breast pain
Painful intercourse due to vaginal dryness
When occurring in men, the symptoms typically involve sexual dysfunction and/or pain associated with the formation of the prolactinoma. Common signs and symptoms include:
Erectile dysfunction
Gynecomastia (development of breast tissue)
Lactation
Infertility
Loss of libido
Because hyperprolactinemia in men does not always manifest with overt symptoms, such as menstrual problems, it is sometimes difficult to spot. In some cases, headaches caused by the pituitary tumor or changes in vision may be the first sign of the condition in both men and women.