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Anxiety Disorder, Generalized

Differential Diagnoses

Adjustment disorder
Adjustment disorder with anxious features
Adult respiratory distress syndrome
AIDS
Anxiety disorder due to a general medical condition
Cardiac conditions
Cognitive impairment disorders
Hypochondriasis
Major depression
Nonpathological anxiety
Obsessive-compulsive disorder
Panic disorder
Phobia
Post-traumatic stress disorder
Social phobia
Somatization disorder
Substance-induced anxiety disorder
Thyrotoxicosis

Specialists

Clinical Psychologist
Internal Medicine Physician
Psychiatrist

Comorbid Conditions

Alcohol/substance abuse
Cardiovascular conditions
Irritable bowel syndrome
Major depressive disorder
Psychiatric illnesses
Sleep disorders

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The severity of the symptoms, response to treatment, coexistence of substance abuse (especially alcohol dependence), other psychological disorders, underlying medical condition(s), ego strength of the individual, and the individual's social support system can affect the length of disability.

Duration Trends from Reference Data

DURATION TRENDS

ICD-9-CM: 300.02

Cases	Mean	Min	Max	No Lost Time	Over 6 Months
2786	50	0	216	1.5%	1.3%

Percentile:	5^th	25^th	Median	75^th	95^th
Days:	6	18	36	69	147

Differences may exist between the duration tables and the reference graphs. Duration tables provide expected recovery periods based on the type of work performed by the individual. The reference graphs reflect the actual experience of many individuals across the spectrum of physical conditions, in a variety of industries, and with varying levels of case management. Selected graphs combine multiple codes based on similar means and medians.

Medical Codes

	ICD-9-CM:
	300.00 -	Anxiety State, Unspecified; Neurosis, Reaction, State (Neurotic), Atypical Anxiety Disorder
	300.02 -	Generalized Anxiety Disorder

Cited References

Cabaltica, Rex B. G., et al. "Anxiety Disorders and Comorbid Medical Illness." General Hospital Psychiatry 30 3 (2008):

Frances, Allen, ed. Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR). 4^th ed. Washington, DC: American Psychiatric Association, 2000.

Kessler, R., M. Keller, and H. Wittchen. "The Epidemiology of Generalized Anxiety Disorder." Psychiatric Clinics of North America 24 (2001): 19-39.

Koukopoulos, A. "Agitated Depression as a Mixed State and the Problem of Melancholia." Psychiatric Clinics of North America 22 3 (1999): 547-564.

O'Brien, R. F., K. Kifugi, and P. Summergrad. "Medical Conditions with Psychiatric Manifestations." Adolescent Medicine Clinics 17 1 (2006):

Shearer, S. L. "Recent Advances in the Understanding and Treatment of Anxiety Disorders." Primary Care: Clinics in Office Practice 34 3 (2007):

Source: Medical Disability Advisor

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