There are two forms of Addison's disease, based on the reason for the disorder. Primary adrenal insufficiency occurs when the adrenal glands themselves are not working properly; secondary adrenal insufficiency occurs when the pituitary gland does not produce enough adrenocorticotropin (ACTH) to adequately stimulate the adrenal glands.
Addison's disease progresses slowly, and symptoms may not present or be noticed until some stressful illness or situation occurs. Common symptoms are:
An illness or accident can aggravate the adrenal problems and cause an Addisonian crisis in which the symptoms include:
Treatment for Addison's disease basically involves replacing the missing cortisol and, if necessary, providing replacement therapy for the missing aldosterone. Caution must be exercised when the person with Addison's disease has surgery or becomes pregnant.
adapted from public-domain resource at " class="external">http://www.niddk.nih.gov/health/endo/pubs/addison/addison.htm