Generalized anxiety disorder is characterized by excessive worry about 2 or more life circumstances for a period of 6 months or longer. Biological and genetic factors may combine with stress to produce psychological symptoms.
Review Date: 3/25/2013 Reviewed By: David B. Merrill, MD, Assistant Clinical Professor of Psychiatry, Department of Psychiatry, Columbia University Medical Center, New York, NY. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, Bethanne Blackman, Stephanie Slon, and Nissi Wang.