Like other complex medical illnesses such as heart disease and diabetes,
the exact causes of generalized anxiety disorder, or GAD, are difficult
to explain. Research suggests that environmental and genetic factors
(eg, a family history of GAD) may make a person more likely to develop
the disorder.
Experts also agree that GAD may be caused by an imbalance of certain
chemicals in the brain. In particular, 2 neurotransmitters (chemical
message carriers) called dopamine and serotonin, are believed to
regulate mood and behavior. Depression and/or other anxiety disorders
are also common in people with GAD.
In people who develop GAD, anxiety symptoms often occur first during
childhood or adolescence, but they can also begin in adulthood. GAD
affects people of all ages, and the disorder is twice as likely to
affect women as men. According to the National Institute of Mental
Health, 4 million Americans suffer from GAD.1
Researchers continue to gain insights into the causes of anxiety
disorders and their relationship to genetics and experience. Although
the causes of GAD in a person are not always known, the symptoms are
recognizable and effective treatments are available. For information
regarding treatment with Lexapro see Lexapro
as GAD treatment. If you feel you or someone you know may have
GAD, review the symptoms of GAD
and take a simple GAD
Self-Test.
Reference: 1. Kessler RC, Chui W, Demler O, Walters E. Prevalence, Severity, and Comorbidity of 12-Month of DSM-IV disorders in the National Comorbidity Survey Replication. Arch Gen Psychiatry. 2005; 62:617-627.