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Hyperprolactinemia

Elevated Serum Prolactin — Workup and Treatment of Common and Uncommon Causes

Written by: Saygı Hospital Health Guide Editorial Board
Published:

This content is for general information; please consult your physician for diagnosis and treatment.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Endokrinoloji department. Book Appointment →

What is Hyperprolactinemia?

Hyperprolactinemia is defined as elevated serum prolactin above laboratory reference range (typically >25 ng/mL in women, >20 ng/mL in men).

Causes include physiologic (pregnancy, lactation, stress), pharmacologic (antipsychotics, antiemetics, SSRIs, opioids, estrogens), pathologic (prolactinoma, stalk effect, primary hypothyroidism), and systemic (CKD, cirrhosis).

Macroprolactin (bound to immunoglobulin) can cause biochemical elevation without clinical symptoms and should be considered if asymptomatic.

Hook effect in very large prolactinomas may cause falsely normal results; serum dilution required when suspected.

Symptoms

Women: amenorrhea, oligomenorrhea, galactorrhea, infertility
Men: hypogonadism, erectile dysfunction, decreased libido, infertility, gynecomastia
Headache or visual defects if due to pituitary macroadenoma
Features of hypothyroidism in secondary hyperprolactinemia
Osteoporosis from chronic hypogonadism
Pubertal delay in adolescents

Risk Factors

Medications: dopamine antagonists (haloperidol, risperidone, metoclopramide), opioids, estrogens, verapamil
Primary hypothyroidism with elevated TRH
Chronic kidney disease and cirrhosis
Pituitary or hypothalamic disorders (prolactinoma, stalk compression)
Pregnancy and breastfeeding (physiologic)
Seizures, chest wall injury, or nipple stimulation

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Galactorrhea, menstrual irregularity, infertility, or erectile dysfunction
  • Persistent elevation of prolactin after excluding pregnancy or medication
  • Headache, visual disturbance, or hypopituitarism

Treatment Methods

01
Review and hold or switch offending medications when clinically feasible
02
Replace levothyroxine in primary hypothyroidism
03
Pituitary MRI to evaluate for adenoma; check macroprolactin in asymptomatic elevations
04
Dopamine agonists (cabergoline, bromocriptine) for prolactinoma or medication-induced hyperprolactinemia not otherwise treatable
05
Treat hypogonadism: estrogen/testosterone replacement, bone density assessment
06
Follow-up prolactin, MRI, and reassessment of etiology; lifestyle counseling

Which Department to Visit?

You can visit our Endokrinoloji department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.