ADHD or Anxiety: Which Test Should You Take First?

This is one of the most common confusions — and it matters, because working on ADHD is not the same as working on anxiety. Here is how to find your bearings.

In the article that follows, I explore adult ADHD and attention difficulties. If you recognise yourself in this theme, I designed an adult ADHD test that helps you take stock of the signs of an ADHD profile in you. It comes with a guide to extend your reflection beyond the results. I also wrote a book on this subject, The Practical CBT Guide, if you would like to go further.

Why They Get Confused

Both produce: difficulty concentrating, a feeling of a mind "going in all directions," inner restlessness, forgetfulness, procrastination, troubled sleep. From the outside, they look very similar. That is why an anxious adult sometimes wonders if they have ADHD — and why an adult with ADHD is often labeled "stressed."

The Real Difference: Since When, and Under What Conditions

The history of attention difficulties and the situations in which they occur are useful questions — not a shortcut to a diagnosis. Attention can vary with demands, interest, stress and other factors. ADHD and anxiety can also coexist, so a short comparison cannot reliably assign each difficulty to one condition.

• Since when? ADHD is a pattern that is typically present since childhood. If, looking back at school, you already saw yourself as a daydreamer, disorganized, unable to sit still — that is a meaningful indicator worth exploring further. Anxiety, on the other hand, often has a "before": a period when things were better.
• What does it vary with? In anxiety, concentration tends to collapse when worry rises and to ease when it subsides. In ADHD, the attention difficulty tends to show up across many different contexts rather than depending on worry — though how it shows up can still vary from one situation to another.

Which Test to Take First

• Long-standing and constant difficulties (attention, organization, impulsivity always present) → start with the adult ADHD test, or the attention deficit test to target attention specifically.
• Recent difficulties, linked to a period of worry, with rumination and tension → start with the generalized anxiety test.

What If It's Both?

This is common: undetected ADHD can generate anxiety (after struggling and missing deadlines repeatedly, you end up worrying constantly), and the two can coexist. Choose the questionnaire that best matches the question you want to explore first: long-standing attention difficulties, or the place of worry in your daily life. Each test is free to take; the PDF report (from €2.90) can help you organize your answers, but it cannot establish a differential diagnosis, and a second purchase is not required before seeking a professional assessment. If a second question feels relevant afterwards, you can take the other test as well — the order is not critical.

Still unsure? See which psychological test to take.

These tests are indicative and do not replace a professional diagnosis.