ADHD or Anxiety? Understanding the Differences, Overlap, and Why It Matters

Michelle Matusalem, PMHNP | ADHD & Anxiety Evaluations in East Brunswick & Kendall Park, New Jersey | MindCare Psychiatric Services

ADHD or Anxiety?

Have you ever felt overwhelmed, distracted, restless, forgetful, or unable to focus? Many people assume they have anxiety when they experience these symptoms. Others wonder if they have ADHD. The truth is that ADHD and anxiety can look very similar on the surface, making them difficult to distinguish without a thorough evaluation.

Understanding the difference is important because the treatment approach for ADHD is often very different from the treatment approach for anxiety.

What is ADHD?

Attention-Deficit/Hyperactivity Disorder (ADHD) is a neurodevelopmental disorder characterized by persistent patterns of inattention, hyperactivity, and/or impulsivity that interfere with daily functioning. ADHD typically begins in childhood, although many adults are not diagnosed until later in life.  

Common symptoms of ADHD include:

Difficulty paying attention

Frequently losing items

Forgetfulness

Poor time management

Trouble completing tasks

Procrastination

Restlessness

Interrupting others

Acting impulsively

Difficulty staying organized

Many adults with ADHD describe their minds as having “multiple browser tabs open at once.”

What is Anxiety?

Anxiety is a mental health condition characterized by excessive worry, fear, nervousness, or apprehension that is difficult to control and causes distress or impairment. Anxiety disorders are among the most common mental health conditions, affecting approximately 19% of U.S. adults each year.  

Common symptoms of anxiety include:

Excessive worrying

Racing thoughts

Feeling on edge

Muscle tension

Irritability

Difficulty sleeping

Panic attacks

Avoidance of stressful situations

Physical symptoms such as sweating, nausea, or rapid heartbeat

Unlike normal stress, anxiety persists even when there is no immediate threat.

ADHD vs. Anxiety: Key Differences

Although both conditions can affect concentration and productivity, the underlying reasons are different.

Difficulty focusing because the brain seeks stimulation

Difficulty focusing because worry consumes mental energy

Mind wanders to multiple unrelated thoughts

Mind stays stuck on fears and worries

Often forgets tasks

Remembers tasks but worries excessively about them

Impulsive decision-making

Overthinking and difficulty making decisions

Chronic disorganization

Organization may suffer due to avoidance or worry

Symptoms typically begin in childhood

Symptoms may develop at any age

Restlessness due to under-stimulation

Restlessness due to nervousness and tension

Example

ADHD:

“I forgot to pay the bill because I got distracted and moved on to five other things.”

Anxiety:

“I remembered the bill, but I spent hours worrying about whether I could afford it.”

Why ADHD and Anxiety Are Frequently Confused

Both conditions can cause:

Difficulty concentrating

Restlessness

Sleep problems

Irritability

Racing thoughts

Poor work or school performance

This overlap often leads people to believe they have only anxiety when ADHD is actually contributing to the problem. Conversely, some individuals assume they have ADHD when chronic anxiety is impairing their attention.  

Can You Have Both ADHD and Anxiety?

Yes. In fact, research shows that anxiety disorders are among the most common conditions that occur alongside ADHD.

Studies suggest that approximately 25%–50% of adults with ADHD also have an anxiety disorder. Some research estimates that nearly half of adults with ADHD experience significant anxiety symptoms.  

When both conditions are present:

ADHD may create stress from missed deadlines, disorganization, and chronic underperformance.

Anxiety develops as a response to repeated struggles.

Anxiety may further worsen concentration and executive functioning.

This can create a cycle where each condition amplifies the other.  

What Does Current Research Tell Us?

Recent research has shifted our understanding of ADHD.

ADHD Is More Than Attention Problems

Researchers now recognize that ADHD involves difficulties with executive functioning, including:

Planning

Prioritizing

Task initiation

Emotional regulation

Working memory

Time management

Many adults with ADHD report that emotional dysregulation is one of their most impairing symptoms.  

ADHD Often Persists Into Adulthood

For many years, ADHD was considered a childhood disorder. We now know that symptoms frequently continue into adulthood and can affect careers, relationships, finances, and self-esteem.  

ADHD Is Common

The estimated prevalence of adult ADHD in the United States is approximately 4.4%, although experts believe many adults remain undiagnosed.  

When Should You Seek an Evaluation?

You may benefit from a professional evaluation if you:

Constantly feel overwhelmed

Have chronic difficulty focusing

Frequently miss deadlines

Struggle with organization

Experience excessive worry

Feel mentally exhausted despite trying your best

Notice symptoms affecting work, school, or relationships

A comprehensive psychiatric evaluation can help determine whether symptoms are related to ADHD, anxiety, depression, trauma, sleep disorders, or a combination of conditions.

Treatment Approaches

ADHD Treatment May Include:

Stimulant medications

Non-stimulant medications

Cognitive Behavioral Therapy (CBT)

Executive functioning coaching

Organizational skills training

Lifestyle modifications

Anxiety Treatment May Include:

Cognitive Behavioral Therapy (CBT)

Mindfulness-based therapies

Medication when appropriate

Stress management techniques

Sleep optimization

Regular exercise

When ADHD and anxiety occur together, treatment should be individualized to address both conditions.  

Final Thoughts

ADHD and anxiety often look alike, but they are not the same condition. The key difference is that ADHD primarily affects attention regulation and executive functioning, while anxiety is driven by excessive fear and worry.

If you’ve spent years wondering why simple tasks feel harder than they should—or why your mind never seems to slow down—you are not alone. The right diagnosis can be life-changing and can open the door to effective treatment and lasting improvement.

Need an ADHD or Anxiety Evaluation?

At MindCare Psychiatric Services, we provide comprehensive psychiatric evaluations for ADHD, anxiety, depression, and other mental health conditions. We serve patients throughout East Brunswick, Kendall Park, Somerset, Middlesex County, and Central New Jersey through both in-person and telehealth appointments. Our thorough assessments help identify symptoms, clarify diagnoses, and create personalized treatment recommendations to support your mental health goals.