[hahy-per-in-suh-li-niz-uh m, -ins-yuh-]
excessive insulin in the blood, resulting in hypoglycemia.
Origin of hyperinsulinism
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A condition marked by excessive secretion of insulin by the islets of Langerhans, resulting in hypoglycemia; the symptoms are similar to those of insulin shock, though more chronic in character.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.