ADHD Resource Centre
ADHD vs Anxiety
ADHD and anxiety can both affect focus, memory and organization. Learn how clinicians think about overlap, differences and co-occurring symptoms.
ADHD and anxiety can look surprisingly similar
Both can cause poor concentration, forgetfulness, procrastination, restlessness, sleep difficulties and feeling overwhelmed. That overlap is one reason self-diagnosis can be difficult.
Why is your attention drifting?
With anxiety, concentration may be disrupted by worry, threat monitoring or repetitive thoughts. With ADHD, attention regulation difficulties may be longstanding and occur even when anxiety is low. Individual experiences vary, and both conditions can be present.
Look at the timeline
ADHD is neurodevelopmental, so clinicians look for symptoms during childhood. Anxiety can also begin early, but understanding which difficulties came first and how they changed over time can help clarify the picture.
Look at the situations
A clinician will ask where symptoms occur, what triggers them and what improves them. Difficulties limited to periods of intense worry may suggest a different pattern from lifelong problems with organization and attention across settings.
ADHD and anxiety can coexist
It is not necessarily an either-or question. Anxiety may develop alongside ADHD, and untreated functional difficulties can themselves become stressful. Assessment should consider comorbidity as well as differential diagnosis.
Why questionnaires are not enough
A screening scale can identify symptoms but cannot reliably determine their cause. Diagnosis requires clinical history, impairment assessment and consideration of other medical and mental-health explanations.
When to seek assessment
If anxiety, attention problems or both are interfering with work, school, relationships or daily functioning, an individualized assessment can help clarify what is contributing and what treatment approach may be appropriate.
Common questions
Frequently asked questions
Can ADHD and anxiety happen together?
Yes. They can coexist, so assessment is not always about choosing one diagnosis over the other.
Does anxiety cause poor concentration?
It can. Worry, hyperarousal and sleep disruption can interfere with attention and memory.
How does a clinician tell the difference?
The clinician considers developmental history, symptom triggers, timing, impairment, mental-health history and other possible explanations.
Keep learning
Related ADHD resources
Medically reviewed by Darwin Lahue, MSc, MN, NP
Medical Director, Tersalus Medical Clinic
This information is provided for general education and does not replace an individualized medical assessment.