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What Are the Overlapping Symptoms of ADHD and Anxiety? 

Overlapping ADHD anxiety symptoms are common and can make diagnosing both conditions more complex. Since ADHD and anxiety disorders share several behavioural similarities, it’s important for clinicians to differentiate between the two to ensure accurate diagnosis and appropriate treatment. Both conditions can lead to difficulties in daily life, but understanding their shared traits can help guide the right approach to care. 

While ADHD is characterised by inattention, hyperactivity, and impulsivity, anxiety disorders often involve excessive worry, nervousness, and avoidance. However, the symptoms overlap in several areas, which can cause confusion. For example, both conditions can lead to difficulty concentrating, but the reasons behind the lack of focus differ. In ADHD, it’s due to a lack of control over attention, while in anxiety, it stems from intrusive, anxious thoughts. 

Key Overlapping Symptoms of ADHD and Anxiety 

Here are some common symptoms shared by ADHD and anxiety that may indicate both disorders are present: 

Difficulty Concentrating  

Both ADHD and anxiety can result in concentration problems. In ADHD, inattention comes from impulsivity and distractibility, while in anxiety, it’s often due to a preoccupation with anxious thoughts. 

Restlessness  

Restlessness is another symptom shared by both conditions. People with ADHD may fidget or have trouble sitting still, while those with anxiety experience nervous energy that causes them to feel restless. 

Irritability  

Irritability is common in both ADHD and anxiety. Individuals with ADHD may become frustrated due to difficulties with focus or impulsivity, while anxiety-related irritability is often due to worry and stress. 

Sleep Disturbances  

Both ADHD and anxiety can cause sleep issues. ADHD can lead to difficulty winding down, while anxiety can keep individuals awake due to excessive worrying. 

Accurate diagnosis is essential for effective treatment. ADHD Certify offers tailored consultations to help address both ADHD and anxiety. For a deeper dive into ADHD and its treatment, 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.