Validated clinical instruments with primary-source citations
Psychiatry & Primary Care

Generalized Anxiety Disorder (GAD)

Excessive, uncontrollable anxiety and worry occurring more days than not for at least 6 months, accompanied by physical restlessness, fatigue, muscle tension, and sleep disturbance.

Epidemiology & Prevalence:

Estimated lifetime prevalence of 5.7% in the general adult population, frequently co-occurring with major depressive disorder.

Clinical Screening Guidelines

USPSTF recommends screening for anxiety disorders in adult patients aged 19 to 64 years, using standardized questionnaires such as the GAD-7.

Recommended Screening Tools & Calculators (2)

Clinical Disclaimer & Scope of Use

This instrument is designed for educational, informational, and clinical reference purposes. Screening scores do not constitute a definitive medical diagnosis. Individual clinical management must integrate full diagnostic history, physical examination, and laboratory data by a licensed healthcare professional.