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Living with Prolactin-producing pituitary gland adenoma

A tumor of the pituitary gland that raises the hormone prolactin and can affect periods, fertility, and sex drive.

Understanding Prolactin-producing pituitary gland adenoma

Prolactin-producing pituitary gland adenoma, also called prolactinoma, is a tumor of the pituitary gland that causes high levels of the hormone prolactin.

Prolactin normally helps breast development and milk production. A prolactinoma can affect men or women. GARD says most happen by chance in people with no family history, and a small number are linked to genetic conditions. GARD lists onset at a variety of ages.

Signs & symptoms

Symptoms vary from person to person. GARD describes these features:

  • Milk production when not pregnant or nursing (galactorrhea)
  • No menstrual periods (amenorrhea)
  • Lower sex drive
  • Trouble getting pregnant or fathering a child (infertility)
  • Erection problems
  • Tiredness

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include cancer specialists, genetic specialists and hormone specialists.

  3. Consider genetic testing

    Changes in AIP are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

  4. Connect with expert centers

    Raymond A. Wood Foundation, Resolve: The National Infertility Association and Pituitary Network Association may keep lists of experts for this condition.

Care & treatment

Care team
Cancer specialists (oncologists); Genetic specialists (geneticists); Hormone specialists (endocrinologists)
Expert care
Expert lists: Raymond A. Wood Foundation, Resolve: The National Infertility Association, Pituitary Network Association
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with Raymond A. Wood Foundation and other patient organizations
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Is my prolactinoma likely to be sporadic or linked to a genetic condition?
Should I have genetic testing, such as for the AIP gene?
How will my hormone levels be monitored?

Quick facts

Symptoms usually starta variety of ages
InheritanceAutosomal Dominant
GenesAIP

Most prolactinomas happen by chance. In a small number of cases they come from a genetic condition such as MEN1 or familial isolated pituitary adenoma, and GARD lists the AIP gene with autosomal dominant inheritance.

GeneticEndocrine

Also known as: familial prolactinoma; lactotrope adenoma; lactotroph adenoma; lactotroph cell adenoma; pituitary adenoma, prolactin-secreting; pituitary gland prolactinoma

Patient organizations

Source: NIH GARD · Prolactin-producing pituitary gland adenomaGARD ID 4508 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

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