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Vasoconstriction is constriction or narrowing of a blood vessel. When a blood vessel constricts, the flow of blood is restricted or slowed. Medications may be used to treat vasoconstriction or to cause vasoconstriction.

Review Date 1/21/2013

Updated by: Linda J. Vorvick, MD, Medical Director and Director of Didactic Curriculum, MEDEX Northwest Division of Physician Assistant Studies, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, David R. Eltz, Stephanie Slon, and Nissi Wang.