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Addison's disease Health Article

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Definition

Addison's disease is a disorder that occurs when the adrenal glands do not produce enough of their hormones.

Alternative Names

Adrenocortical hypofunction; Chronic adrenocortical insufficiency; Primary adrenal insufficiency

Causes, incidence, and risk factors

The adrenal glands are small hormone-secreting organs located on top of each kidney. They consist of the outer portion (called the cortex) and the inner portion (called the medulla).

The cortex produces 3 types of hormones:

  • The glucocorticoid hormones (such as cortisol) maintain sugar (glucose) control, decrease (suppress) immune response, and help the body respond to stress.
  • The mineralocorticoid hormones (such as aldosterone) regulate sodium and potassium balance.
  • The sex hormones, androgens (male) and estrogens (female), affect sexual development and sex drive.

Addison's disease results from damage to the adrenal cortex. The damage causes the cortex to produce less of its hormones.

This damage may be caused by the following:

Risk factors for the autoimmune type of Addison's disease include other autoimmune diseases:

Certain genetic defects may cause these conditions.

Symptoms

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Reviewer Info: Elizabeth H. Holt, MD, PhD, Assistant Professor of Medicine, Section of Endocrinology and Metabolism, Yale University. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.; ADAM Health Illustrated Encyclopedia, 03/18/2008
 
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