The Gonadotropin Releasing Hormone, secreted by the hypothalamus; GnRH stimulates the release of LH and FSH from the pituitary gland.

GnRH Pulsatile Therapy

A form of treatment which uses a portable, battery-driven pump to replace the missing GnRH by releasing it in pulses at regular intervals, typically every 90 minutes.


A hormone which regulates the function of the gonads; the two main gonadotrophins are LH and FSH, both released from the pituitary gland.

Growth Factor

A substance made by the body that functions to regulate cell division and cell survival. Some growth factors are also produced in the laboratory and used in biological therapy.


Growth Hormone Research Society.


A usually harmless female-like enlargement of one or both breasts in males; occurs commonly in teen-aged boys, but may be a characteristic of some hypogonadal males.

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The Pituitary Patient Resource Guide Sixth Edition is now available! Be one of the first to have the most up-to-date information. The Pituitary Patient Resource Guide a one of a kind publication intended as an invaluable source of information not only for patients but also their families, physicians, and all health care providers. It contains information on symptoms, proper testing, how to get a diagnosis, and the treatment options that are available. It also includes Pituitary Network Association's patient resource listings for expert medical care.

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If you are a nurse or medical professional, register for PNA CEU Membership and  earn CEU credits to learn about the symptoms, diagnosis and treatment options for patients with pituitary disorders. Help PNA reduce the time it takes for patients to get an accurate diagnosis.

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