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Can Anxiety Be Mistaken for ADHD in Assessments? 

Anxiety misdiagnosed as ADHD is a common challenge in mental health assessments, leading to potential assessment errors and false positives. Both ADHD and anxiety disorders share symptoms such as restlessness, inattention, and difficulty concentrating, which can make it difficult for clinicians to distinguish between the two. When anxiety is mistaken for ADHD, it can result in inappropriate treatment plans that don’t address the root cause of the symptoms. 

Since both ADHD and anxiety affect a person’s ability to focus and manage stress, assessment errors can occur when these symptoms are not carefully evaluated in the context of each disorder. Understanding the potential for false positives is crucial for accurate diagnosis and ensuring that individuals receive the correct treatment for their condition. 

How Anxiety Can Be Mistaken for ADHD 

Here’s how anxiety misdiagnosed as ADHD can happen during assessments: 

Overlap of Symptoms  

Both ADHD and anxiety disorders share key symptoms, including trouble concentrating, irritability, and restlessness. Individuals with anxiety often have difficulty focusing due to racing thoughts or excessive worry, while those with ADHD struggle to stay on task because of impulsivity and distractibility. This overlap can make it challenging for clinicians to distinguish between the two disorders, especially during initial assessments. 

Anxiety-Induced Inattention  

In individuals with anxiety, inattention can arise from constant worrying or fear, which can look very similar to the distractibility seen in ADHD. The anxiety misdiagnosed as ADHD issue is often compounded if a patient is more visibly anxious or stressed, which may lead the clinician to focus on attention problems rather than the underlying anxiety. 

Emotional and Behavioural Reactivity  

Both conditions can lead to emotional instability. People with ADHD may be impulsive and quick to react emotionally, while anxiety can cause heightened emotional sensitivity due to fear or excessive worry. These behavioural patterns might be mistakenly attributed to ADHD, especially if the patient shows signs of restlessness or social withdrawal. 

Preventing Assessment Errors 

To avoid false positives and ensure accurate diagnosis, a comprehensive assessment process is vital. This includes a thorough review of symptoms, behavioural history, and family history. Clinicians should also utilise standardised ADHD behaviour rating scales and anxiety-specific questionnaires to help differentiate between ADHD and anxiety. In some cases, seeking input from multiple sources, such as parents, teachers, or therapists, can provide a clearer picture of the patient’s symptoms. 

For more information on how anxiety misdiagnosed as ADHD can impact assessments, visit ADHD Certify for personalised consultations. For a deeper dive into assessment errors and accurate ADHD diagnosis, read our complete guide to Anxiety disorders.

Dr. Rebecca Fernandez, MBBS, author and a reviewer for my patient advice - mypatientadvice.co.uk

Dr. Rebecca Fernandez, MBBS

Author

Dr. Rebecca Fernandez is a UK-trained physician with an MBBS and experience in general surgery, cardiology, internal medicine, gynecology, intensive care, and emergency medicine. She has managed critically ill patients, stabilised acute trauma cases, and provided comprehensive inpatient and outpatient care. In psychiatry, Dr. Fernandez has worked with psychotic, mood, anxiety, and substance use disorders, applying evidence-based approaches such as CBT, ACT, and mindfulness-based therapies. Her skills span patient assessment, treatment planning, and the integration of digital health solutions to support mental well-being.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the author's privacy.