Hyperprolactinemia: Causes, Symptoms, Diagnosis, and Treatment
Hyperprolactinemia is a condition characterized by abnormally high levels of prolactin in the blood. Prolactin is a hormone produced by the pituitary gland, primarily responsible for stimulating breast milk production after childbirth. However, elevated prolactin levels can occur in both men and women who are not pregnant or breastfeeding, leading to various health issues.
Causes
The most common causes of hyperprolactinemia include:
Pituitary tumors (prolactinomas) 1, 4
Certain medications, such as those for high blood pressure, depression, and nausea 1, 6
Hypothyroidism 5
Chronic kidney or liver conditions 4
Chest wall injuries or irritation 4
Symptoms
Symptoms of hyperprolactinemia can vary between men and women:
In women:
Menstrual irregularities or absence of periods 1, 2
Infertility 2, 4
Galactorrhea (milk production when not pregnant or breastfeeding) 1, 4
Decreased libido 4
Vaginal dryness 1
In men:
Decreased libido 4
Erectile dysfunction 4
Infertility 4
Gynecomastia (enlarged breast tissue) 4
Reduced body hair and muscle mass 4
Both men and women may experience bone loss due to the condition's effects on sex hormone production 4, 5.
Diagnosis and Treatment
Diagnosis of hyperprolactinemia typically involves blood tests to measure prolactin levels. Prolactin levels above 25 ng/mL in women who are not pregnant are considered elevated 1. Additional tests, such as thyroid function tests and imaging studies like MRI, may be performed to identify the underlying cause 5, 6.
Treatment depends on the cause and severity of the condition:
Medication: Dopamine agonists like cabergoline and bromocriptine are commonly prescribed to lower prolactin levels 1, 5.
Addressing underlying conditions: Treating hypothyroidism or adjusting medications that may be causing the elevated prolactin levels 5, 6.
Surgery: In rare cases where medication is ineffective for large pituitary tumors 1, 5.
With proper treatment, most patients with hyperprolactinemia can effectively manage their condition and alleviate symptoms 1, 5.
References:
3 markers linked to this condition
Estradiol (Estrogen) is a female hormone, produced primarily in the ovary. The amount of estrogen produced depends on the phase of the menstrual cycle.
Pituitary hormone regulating milk production and reproductive function.
Serum prolactin level measuring pituitary hormone for reproductive evaluation.
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