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Hypogonadism - Overview

Alternative Names

Gonadal deficiency

Definition of Hypogonadism:

Hypogonadism is when the sex glands produce little or no hormones. In men, these glands (gonads) are the testes; in women, they are the ovaries.

Causes, incidence, and risk factors:

The cause of hypogonadism may be "primary" or "central." In primary hypogonadism, the ovaries or testes themselves do not function properly. Some causes of primary hypogonadism include:

  • Certain autoimmune disorders
  • Genetic and developmental disorders
  • Infection
  • Liver and kidney disease
  • Radiation
  • Surgery

The most common genetic disorders that cause primary hypogonadism are Turner syndrome (in women) and Klinefelter syndrome (in men).

In central hypogonadism, the centers in the brain that control the gonads (hypothalamus and pituitary) do not function properly. Some causes of central hypogonadism include:

  • Bleeding
  • Genetic problems
  • Infections
  • Nutritional deficiencies
  • Iron excess (hemochromatosis)
  • Radiation
    • Rapid, significant weight loss
    • Surgery
    • Trauma
    • Tumors

A genetic cause of central hypogonadism that also produces an inability to smell is Kallmann syndrome (males). The most common tumors affecting the pituitary area are craniopharyngioma (in children) and prolactinoma (in adults).

  • Reviewed last on: 8/1/2008
  • Linda Vorvick, MD, Seattle Site Coordinator, Maternal & Child Health Lecturer, Pathophysiology, MEDEX Northwest Division of Physician Assistant Studies, University of Washington School of Medicine; Susan Storck, MD, FACOG, Clinical Teaching Faculty, Department of Obstetrics and Gynecology, University of Washington School of Medicine; Chief, Eastside Department of Obstetrics and Gynecology, Group Health Cooperative of Puget Sound, Redmond, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

References

Sigman M, Jarow JP. Male infertility. In: Wein AJ, ed. Campbell-Walsh Urology. 9th ed. Philadelphia, Pa: Sauders Elsevier; 2007: chap 19.

Molitch ME. Anterior pituitary. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007: chap 242.

Swerdloff RS, Wang C. The testis and male sexual function. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007: chap 253.

White PC. Disorders of sexual differentiation. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007: chap 252.

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