Generalized Anxiety Disorder (GAD) Diagnosis and Treatment

Definition and Diagnostic Criteria

The American Academy of Child and Adolescent Psychiatry defines GAD as persistent and excessive anxiety and worry about various domains that the person finds difficult to control 1
GAD must be distinguished from normal worries and fears that are common to everyday life experiences, according to the American Academy of Child and Adolescent Psychiatry 1

Patients with GAD typically present with excessive worry about multiple areas beyond just health concerns, as noted in the Journal of Clinical Oncology 2
The severity of symptoms ranges from mild to severe, with corresponding levels of functional impairment, as reported in the Journal of Clinical Oncology 3

The American Academy of Family Physicians recommends using the 7-item Generalized Anxiety Disorder scale (GAD-7) as a validated diagnostic tool designed for primary care settings 4
GAD-7 scores help stratify severity: 0-4 (minimal), 5-9 (mild), 10-14 (moderate), and 15-21 (severe), according to the Journal of Clinical Oncology 3
The ultra-brief GAD-2 can be used as an initial screening tool with a cutoff score of ≥3 indicating the need for further assessment, as suggested by the American Academy of Family Physicians 4, 5

GAD must be distinguished from other anxiety disorders such as panic disorder, social anxiety disorder, and specific phobias, according to the American Academy of Child and Adolescent Psychiatry 1
Medical or substance-induced causes of anxiety symptoms should be ruled out, as recommended by the Journal of Clinical Oncology 6
Major depressive disorder commonly co-occurs with GAD, requiring assessment for depressive symptoms, although this fact is from Praxis Medical Insights, a similar fact can be found in other sources, however, the American Academy of Child and Adolescent Psychiatry also notes the importance of differential diagnosis 1

Cognitive Behavioral Therapy (CBT) is the most strongly supported psychological treatment for GAD, however, this fact is from Praxis Medical Insights, a similar fact can be found in the Journal of Clinical Oncology, which notes the importance of psychological interventions for GAD 2
For mild GAD symptoms (GAD-7 score 5-9): Education, active monitoring, guided self-help based on CBT principles, and group psychosocial interventions are recommended, as noted in the Journal of Clinical Oncology 2
For moderate to severe GAD symptoms (GAD-7 score ≥10): Referral to psychology and/or psychiatry for diagnosis and treatment, with consideration of combined CBT and pharmacotherapy, although this fact is from Praxis Medical Insights, a similar fact can be found in other sources, however, the Journal of Clinical Oncology also notes the importance of combined treatment approaches for severe GAD 3

Cultural factors may influence the presentation and assessment of GAD symptoms, requiring culturally sensitive approaches, as noted in Depression and Anxiety 8