Anxiety Disorders and Anxiety Medication

Anxiety Disorders

Generalized Anxiety Disorder

"I always thought I was just a worrier. I'd feel keyed up and unable to relax. At times it would come and go, and at times it would be constant. It could go on for days. I'd worry about what I was going to fix for a dinner party, or what would be a great present for somebody. I just couldn't let something go."

"I'd have terrible sleeping problems. There were times I'd wake up wired in the middle of the night. I had trouble concentrating, even reading the newspaper or a novel. Sometimes I'd feel a little lightheaded. My heart would race or pound. And that would make me worry more. I was always imagining things were worse than they really were: when I got a stomachache, I'd think it was an ulcer."

"When my problems were at their worst, I'd miss work and feel just terrible about it. Then I worried that I'd lose my job. My life was miserable until I got treatment."

Generalized anxiety disorder (GAD) is much more than the normal anxiety people experience day to day. It's chronic and fills one's day with exaggerated worry and tension, even though there is little or nothing to provoke it. Having this disorder means always anticipating disaster, often worrying excessively about health, money, family, or work. Sometimes, though, the source of the worry is hard to pinpoint. Simply the thought of getting through the day provokes anxiety.

People with GAD can't seem to shake their concerns, even though they usually realize that their anxiety is more intense than the situation warrants. Their worries are accompanied by physical symptoms, especially fatigue, headaches, muscle tension, muscle aches, difficulty swallowing, trembling, twitching, irritability, sweating, and hot flashes. People with GAD may feel lightheaded or out of breath. They also may feel nauseated or have to go to the bathroom frequently.

Individuals with GAD seem unable to relax, and they may startle more easily than other people. They tend to have difficulty concentrating, too. Often, they have trouble falling or staying asleep.

Unlike people with several other anxiety disorders, people with GAD don't characteristically avoid certain situations as a result of their disorder. When impairment associated with GAD is mild, people with the disorder may be able to function in social settings or on the job. If severe, however, GAD can be very debilitating, making it difficult to carry out even the most ordinary daily activities.

GAD affects about 4 million adult Americans¹ and about twice as many women as men.² The disorder comes on gradually and can begin across the life cycle, though the risk is highest between childhood and middle age.² It is diagnosed when someone spends at least 6 months worrying excessively about a number of everyday problems. There is evidence that genes play a modest role in GAD.¹³

GAD is commonly treated with medications. GAD rarely occurs alone, however; it is usually accompanied by another anxiety disorder, depression, or substance abuse.²^,⁴ These other conditions must be treated along with GAD.

References

¹Narrow WE, Rae DS, Regier DA. NIMH epidemiology note: prevalence of anxiety disorders. One-year prevalence best estimates calculated from ECA and NCS data. Population estimates based on U.S. Census estimated residential population age 18 to 54 on July 1, 1998. Unpublished.

²Robins LN, Regier DA, eds. Psychiatric disorders in America: the Epidemiologic Catchment Area Study. New York: The Free Press, 1991.

³The NIMH Genetics Workgroup. Genetics and mental disorders. NIH Publication No. 98-4268. Rockville, MD: National Institute of Mental Health, 1998.

⁴Regier DA, Rae DS, Narrow WE, et al. Prevalence of anxiety disorders and their comorbidity with mood and addictive disorders. British Journal of Psychiatry Supplement, 1998; (34): 24-8.

⁵Kushner MG, Sher KJ, Beitman BD. The relation between alcohol problems and the anxiety disorders. American Journal of Psychiatry, 1990; 147(6): 685-95.

⁶Wonderlich SA, Mitchell JE. Eating disorders and comorbidity: empirical, conceptual, and clinical implications. Psychopharmacology Bulletin, 1997; 33(3): 381-90.

⁷Davidson JR. Trauma: the impact of post-traumatic stress disorder. Journal of Psychopharmacology, 2000; 14(2 Suppl 1): S5-S12.

⁸Margolin G, Gordis EB. The effects of family and community violence on children. Annual Review of Psychology, 2000; 51: 445-79.

⁹Yehuda R. Biological factors associated with susceptibility to posttraumatic stress disorder. Canadian Journal of Psychiatry, 1999; 44(1): 34-9.

¹⁰Bourdon KH, Boyd JH, Rae DS, et al. Gender differences in phobias: results of the ECA community survey. Journal of Anxiety Disorders, 1988; 2: 227-41.

¹¹Kendler KS, Walters EE, Truett KR, et al. A twin-family study of self-report symptoms of panic-phobia and somatization. Behavior Genetics, 1995; 25(6): 499-515.

¹²Boyd JH, Rae DS, Thompson JW, et al. Phobia: prevalence and risk factors. Social Psychiatry and Psychiatric Epidemiology, 1990; 25(6): 314-23.

¹³Kendler KS, Neale MC, Kessler RC, et al. Generalized anxiety disorder in women. A population-based twin study. Archives of General Psychiatry, 1992; 49(4): 267-72.

¹⁴LeDoux J. Fear and the brain: where have we been, and where are we going? Biological Psychiatry, 1998; 44(12): 1229-38.

¹⁵Bremner JD, Randall P, Scott TM, et al. MRI-based measurement of hippocampal volume in combat-related posttraumatic stress disorder. American Journal of Psychiatry, 1995; 152: 973-81.

¹⁶Stein MB, Hanna C, Koverola C, et al. Structural brain changes in PTSD: does trauma alter neuroanatomy? In: Yehuda R, McFarlane AC, eds. Psychobiology of posttraumatic stress disorder. Annals of the New York Academy of Sciences, 821. New York: The New York Academy of Sciences, 1997.

¹⁷Rauch SL, Savage CR. Neuroimaging and neuropsychology of the striatum. Bridging basic science and clinical practice. Psychiatric Clinics of North America, 1997; 20(4): 741-68.

¹⁸Gould E, Reeves AJ, Fallah M, et al. Hippocampal neurogenesis in adult Old World primates. Proceedings of the National Academy of Sciences USA, 1999, 96(9): 5263-7.

¹⁹Hyman SE, Rudorfer MV. Anxiety disorders. In: Dale DC, Federman DD, eds. Scientific American® Medicine. Volume 3. New York: Healtheon/WebMD Corp., 2000, Sect. 13, Subsect. VIII.

This brochure is a revision by Mary Lynn Hendrix of an earlier version written by Marilyn Dickey.

Scientific information and/or review for this revision were provided by Steven E. Hyman, M.D., Richard Nakamura, Ph.D., Matthew Rudorfer, M.D., Linda Street, Ph.D., and Elaine Baldwin, all of NIMH, and Una McCann, M.D., now of The Johns Hopkins University. Editorial assistance was provided by Clarissa Wittenberg, Margaret Strock, and Melissa Spearing of NIMH.

All material in this publication is in the public domain and may be copied or reproduced without permission of the Institute. Citation of the source is appreciated.

NIH Publication No. 3879

Posted: 04/09/2004

This material can also be obtained as a pdf at the National Institute of Mental Health.

Sourced at: http://www.nimh.nih.gov/Publicat/anxiety.cfm