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dawn phenomenon

dawn phenomenon in Medicine

dawn phenomenon n.
The occurrence of abrupt increases in fasting levels of plasma glucose concentrations between the hours of 5 and 9 a.m., without preceding hypoglycemia, especially in diabetic patients receiving insulin therapy.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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