The Healing JournalADHD

ADHD or Anxiety? Why the Two Get Confused

Restless, unfocused, and behind. Both conditions produce that, each can cause the other, and plenty of people have both. Here is how the difference is worked out.

ADHD · 6 min read
September 10, 2026
The Healing Effect Clinical Team
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  • ADHD is a longstanding pattern in attention and activity. An anxiety disorder is driven by worry and fear. Both can make it hard to concentrate.
  • The DSM-5 criteria for generalized anxiety disorder include restlessness, fatigue, difficulty concentrating, and irritability, which is why the two look alike from the outside.
  • Untreated ADHD can generate real anxiety, and sustained anxiety can look like inattention. The causation runs both ways.
  • History is what separates them: how far back it goes, whether it shows up everywhere, and what happens when the pressure lifts.
  • You do not need to know the answer before starting therapy. Working it out is a reasonable thing to bring in.

You cannot concentrate. Your mind will not settle. You are restless, you are behind, and you are tired in a way that sleep does not touch. Take that list to the internet and you will find two confident answers, and they will not be the same answer.

This is one of the more common places people get stuck, and it is not because anyone is being careless. ADHD and anxiety genuinely share several of their most noticeable features. Telling them apart depends less on the symptoms themselves than on where they came from and how long they have been there.

What is the actual difference between ADHD and anxiety?

The short version is that ADHD is a longstanding pattern in how attention, activity, and impulse regulation work, while an anxiety disorder is driven by worry and fear. Both can produce trouble concentrating. They arrive at it from different directions.

With ADHD, attention tends to slip regardless of the stakes. You can be interested in something, want to do it, and still find your mind somewhere else. NIMH describes the inattentive pattern as difficulty paying attention, staying on task, and staying organized, present across multiple situations rather than in one corner of your life.

With generalized anxiety, the concentration problem is downstream of the worrying. The DSM-5 criteria for generalized anxiety disorder describe excessive anxiety and worry occurring more days than not for at least six months, difficulty controlling the worry, and a set of associated symptoms that includes restlessness or feeling keyed up, being easily fatigued, difficulty concentrating or mind going blank, irritability, muscle tension, and sleep disturbance.

Read that list again and the problem becomes obvious. Restless, unfocused, irritable, and not sleeping well describes both conditions from the outside.

Why do they look so similar?

Because several of the symptoms are genuinely the same symptom, arrived at by different routes. A review of ADHD and anxiety comorbidity notes that overlapping symptoms, along with differences in diagnostic tools and in who is reporting the information, complicate the picture for clinicians as well as for the people living it.

There is a second layer that makes it harder. Untreated ADHD is a reliable generator of anxiety. If you have spent years missing details, running late, and bracing for the moment someone notices, you develop a well-earned vigilance about it. That vigilance is real anxiety. It is also, in that case, a consequence rather than the origin.

It runs the other direction too. Sustained anxiety is cognitively expensive. A mind occupied with scanning for what might go wrong has less left over for the meeting in front of it, and that can look a great deal like inattention.

Can you have both?

Yes, and it is common enough that clinicians expect it. NIMH notes that ADHD often co-occurs with other mental disorders and can make them harder to treat. The CDC lists anxiety among the conditions a provider considers when evaluating an adult for ADHD.

The research on women and girls makes the same point from another angle. One review found substantially higher lifetime rates of anxiety disorders among girls with ADHD than among girls without it, which is part of the reason ADHD gets missed in women for so long. So the question is often not which one it is. It is which one is doing the most work right now, and what came first.

How does a clinician start to tell them apart?

Mostly by looking at history rather than at this week. A few of the questions that tend to matter:

  • How far back does it go? An ADHD diagnosis requires that symptoms were present before age 12. The CDC describes the provider determining exactly that. Anxiety can begin at any point in life, including in direct response to something that happened.
  • Is it everywhere, or somewhere? ADHD symptoms show up across settings. Anxiety is often, though not always, attached to particular situations, relationships, or themes.
  • What happens when the pressure comes off? After a genuinely restful stretch, anxiety-driven concentration problems often ease. The ADHD pattern tends to be steadier.
  • What is the restlessness made of? Anxious restlessness usually has content. There is something you are turning over. ADHD restlessness is frequently contentless, more like static than like dread.
  • Where does avoidance come from? Anxious avoidance is about the feared outcome. ADHD avoidance is more often about not being able to start a task that is simply uninteresting, even one you are not remotely afraid of.

None of these settles it alone. Taken together they start to point somewhere, and that is what a proper evaluation is for.

Does it matter which one it is?

It matters because the plan follows the answer. NIMH lists medication and psychotherapy, including behavioral and cognitive behavioral approaches, as the common treatments for ADHD in adults, and notes that effective treatment often combines elements. Anxiety treatment has its own well-established approaches. They are not interchangeable.

The practical risk of guessing wrong is real. Treating only the anxiety when ADHD is underneath tends to produce partial results, because the thing generating the stress keeps generating it. Treating only the ADHD when anxiety is the larger problem misses the fear that is actually running the day. Getting the picture right early saves a lot of frustration later.

What do you do if you are not sure?

You do not have to sort it out on your own before you make the call. Working out what is driving what is a legitimate reason to start therapy, not something you need to have finished first.

What is worth doing in the meantime is paying attention to sequence. When did the concentration problems start? Were they there before this job, this relationship, this year? Was there ever a stretch when they were not there at all? That timeline is one of the more useful things you can bring in.

To be clear about what we do: The Healing Effect does not do formal ADHD testing, and we do not prescribe. We support people managing the day to day impact of ADHD and anxiety, and we can point you toward an evaluation or a medication consult when that is the right next step. Our ADHD support page covers that work in more detail. Telehealth is available for clients located in Arizona.

The honest bottom line

ADHD and anxiety overlap because they share symptoms, because each one can produce the other, and because plenty of people have both. Sorting it out is a reasonable thing to want help with, and it is not a question you are supposed to be able to answer from a symptom list.

If you have been going back and forth on this, reach out to us and we can talk through where to start.

If the calm on the outside is costing you a lot on the inside, our care team can help you find a therapist who fits, at your pace.

Reach Out

Frequently Asked Questions

Can anxiety cause ADHD?

No. Anxiety can produce concentration problems that resemble ADHD, but ADHD is a developmental pattern that requires symptoms to have been present before age 12. Anxiety can make existing ADHD symptoms harder to manage, which is a different thing.

Can ADHD cause anxiety?

Living with unrecognized ADHD often produces real and understandable anxiety, particularly around deadlines, forgetting things, and being found out. NIMH notes that ADHD often co-occurs with other mental disorders and can make them harder to treat.

How do I know which one to get treated first?

That is a clinical judgment rather than something to decide alone, and it usually depends on which is causing more disruption right now and what the history suggests came first. It is a reasonable question to open with at a first appointment.

Do you diagnose or test for ADHD?

No. We do not do formal ADHD testing and we do not prescribe. We support people managing the day to day impact of ADHD and anxiety, and we can refer you for an evaluation or a medication consult when that is the right next step.

What should I bring to a first appointment?

A rough timeline helps more than a symptom list. When the concentration problems started, whether there was ever a period without them, and what anyone noticed about you in school are all useful.

The Healing Effect is not a crisis service. If you are in crisis or thinking about harming yourself, call or text 988 to reach the Suicide and Crisis Lifeline, available 24 hours a day, 7 days a week.

Sources:

National Institute of Mental Health, ADHD in Adults: 4 Things to Know (inattention described as difficulty paying attention, staying on task, and staying organized, present across multiple situations; ADHD often co-occurs with other mental disorders and can make them harder to treat; common adult treatments are medication and psychotherapy including behavioral and cognitive behavioral therapy, often in combination).

Centers for Disease Control and Prevention, ADHD in Adults (the provider determines whether ADHD symptoms were present before age 12, and considers conditions that often present with ADHD such as anxiety, depression, sleep problems, substance misuse, and learning disabilities).

Munir S, Takov V. Generalized Anxiety Disorder. StatPearls, National Center for Biotechnology Information (DSM-5 criteria: excessive anxiety and worry for at least six months, difficulty controlling the worry, and associated symptoms including restlessness or feeling keyed up, being easily fatigued, difficulty concentrating or mind going blank, irritability, muscle tension, and sleep disturbance).

Koyuncu A, Ayan T, Ince Guliyev E, Erbilgin S, Deveci E. ADHD and Anxiety Disorder Comorbidity in Children and Adults: Diagnostic and Therapeutic Challenges. Current Psychiatry Reports. 2022;24(2):129-140 (overlapping symptoms, differing diagnostic tools, and informant effects complicate diagnosis of the comorbidity, and complicate the choice of treatment).

Madhoo M, Quinn PO. A Review of Attention-Deficit/Hyperactivity Disorder in Women and Girls: Uncovering This Hidden Diagnosis. Primary Care Companion for CNS Disorders. 2014;16(3) (higher lifetime prevalence of anxiety disorders among girls with ADHD compared with controls).

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Tell us a little about what is going on and our care team will help you find a therapist who fits, at your pace.

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