What causes high prolactin hormone?

One common cause of hyperprolactinemia is a growth or tumor on the pituitary gland called a prolactinoma. The tumor produces high levels of prolactin. These tumors can be large or small and are usually benign, meaning they are not cancerous. Large tumors can also cause headaches, vision problems, or both.
A.

What are the symptoms of prolactin levels being high?

In females, prolactinoma can cause:
  • Irregular menstrual periods (oligomenorrhea) or no menstrual periods (amenorrhea)
  • Milky discharge from the breasts (galactorrhea) when not pregnant or breast-feeding.
  • Painful intercourse due to vaginal dryness.
  • Acne and excessive body and facial hair growth (hirsutism)
  • What are the symptoms of a pituitary tumor?

    Depending on which hormones are affected, symptoms might include:
    • Nausea.
    • Weakness.
    • Unexplained weight loss or weight gain.
    • Loss of body hair.
    • Feeling cold.
    • Feeling tired or weak.
    • Menstrual changes or loss of menstrual periods in women.
    • Erectile dysfunction (trouble with erections) in men.
  • Can too much prolactin cause infertility?

    High prolactin levels may cause infertility . Another term for high prolactin levels is hyperprolactinemia. Women who are not pregnant and are not breastfeeding should have low levels of prolactin. If a non-pregnant woman has abnormally high levels of prolactin, it may cause her difficulty in becoming pregnant.
  • What is the normal level of prolactin?

    The normal values for prolactin are: Males: less than 20 ng/dL (425 mIU/L ) Nonpregnant females: 5 to 40 ng/dL (106 to 850 mIU/L) Pregnant women: 80 to 400 ng/dL (1,700 to 8,500 mIU/L)
B.

What can cause overproduction of prolactin?

Overproduction of prolactin from a pituitary tumor (prolactinoma) can cause a decrease in normal levels of sex hormones — estrogen in women and testosterone in men. Excessive prolactin in the blood affects men and women differently. In women, prolactinoma might cause: Irregular menstrual periods.
  • What is the normal range of prolactin?

    Prolactin is the hormone that stimulates milk production by the breasts. The normal prolactin level is < 20 ng/ml. In most women the tumors are detected when they are small (microadenomas) and the prolactin level is only moderately elevated (30 - 300 ng/ml).
  • Can High prolactin levels cause hair loss?

    High prolactin levels can cause hair loss in a pattern similar to female androgenetic alopecia. It does this by interfering with normal ovarian production of estrogen. Being overweight or obese affects insulin, testosterone and estrogen levels so that condition is also causing hair loss.
  • Can too much prolactin cause infertility?

    High prolactin levels may cause infertility . Another term for high prolactin levels is hyperprolactinemia. Women who are not pregnant and are not breastfeeding should have low levels of prolactin. If a non-pregnant woman has abnormally high levels of prolactin, it may cause her difficulty in becoming pregnant.

Updated: 3rd December 2019

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