Quick answer
The DSM-5 criteria for GAD include: excessive anxiety and worry about multiple events, more days than not for at least six months; difficulty controlling the worry; at least three associated symptoms (restlessness, fatigue, concentration problems, irritability, muscle tension, sleep disturbance); significant distress or impairment; and the anxiety not being due to another cause.
The core criteria
The DSM-5 (the diagnostic manual widely used by clinicians) defines GAD through several criteria. First: excessive anxiety and worry about a number of events or activities, occurring more days than not for at least six months. Second: the person finds it difficult to control the worry. These two — pervasive, persistent, uncontrollable worry across multiple areas over a sustained period — form the heart of the diagnosis and distinguish GAD from focused fears or short-term stress. The six-month duration is a key threshold, ensuring the pattern is chronic rather than a passing phase.
The associated symptoms
The criteria also require the anxiety and worry to be accompanied by at least three (in adults) of six associated symptoms: restlessness or feeling keyed-up or on edge; being easily fatigued; difficulty concentrating or mind going blank; irritability; muscle tension; and sleep disturbance (difficulty falling or staying asleep, or restless, unsatisfying sleep). In children, only one of these symptoms is needed. These reflect the physical and cognitive toll of chronic worry — the body kept on edge and the mind worn down — and their presence helps confirm that the worry is at a clinically significant level.
The impairment and exclusion criteria
Finally, the DSM-5 requires that the anxiety, worry, or physical symptoms cause clinically significant distress or impairment in social, occupational, or other important areas of functioning — everyday worry that doesn't disrupt your life doesn't meet the bar. And the disturbance must not be attributable to a substance (like a medication or drug) or another medical condition, and not better explained by a different mental health condition. Together, these criteria ensure GAD is diagnosed as a genuine, impairing disorder distinct from normal worry or other causes. A qualified clinician applies these criteria in assessment — they're a framework for professional diagnosis, not self-labeling, but understanding them can help you recognize whether seeking help is warranted.
When to talk to a professional
If worry occupies most of your days, feels uncontrollable, and comes with tension, fatigue, or poor sleep for six months or more, talk to a professional. GAD responds well to CBT and, when appropriate, medication — chronic worry is a treatable condition, not a personality trait.
This article is for general information only and is not medical advice, diagnosis, or treatment. Always consult a qualified health professional about your situation. If you are in crisis, contact your local emergency number or a crisis line immediately.