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Can ADHD Be Confused with Other Behavioural Disorders? 

Yes, ADHD misdiagnosis can occur, as its symptoms often overlap with those of other behavioural disorders. Conditions such as anxiety, depression, or oppositional defiant disorder (ODD) can present similar signs, leading to potential confusion. The behavioural overlap in these disorders can make it difficult to distinguish ADHD from other conditions, especially in younger children whose symptoms are still developing. 

For example, children with ADHD may exhibit impulsivity, inattention, or hyperactivity, which can also be seen in children with anxiety or mood disorders. Similarly, the disruptive behaviour and difficulty following instructions seen in ADHD can resemble the symptoms of ODD. This symptom confusion can lead to incorrect diagnoses, delaying appropriate treatment and support for the child. 

Common Symptoms 

Impulsivity 

Children with both ADHD misdiagnosis and other behavioural disorders may struggle with impulse control, which can lead to acting out without thinking. 

Difficulty focusing 

Symptoms such as a lack of attention can be seen in both ADHD and anxiety or depression, making it hard to determine the root cause. 

Disruptive behaviour 

The behavioural overlap between ADHD and other conditions like ODD can lead to misinterpretations of the child’s behaviour, affecting treatment plans. 

Accurate diagnosis of ADHD misdiagnosis requires careful evaluation by professionals to ensure the right treatment is implemented and the child receives the support they need. 

Visit providers like ADHD Certify for personal consultations and expert advice tailored to your needs.   

For a deeper dive into the science, diagnosis, and full treatment landscape, read our complete guide to Clinical interviews and History Taking.  

Harriet Winslow, BSc - My patient advice author - mypatientadvice.co.uk

Harriet Winslow, BSc

Author

Harriet Winslow is a clinical psychologist with a Bachelor’s in Clinical Psychology and extensive experience in behaviour therapy and developmental disorders. She has worked with children and adolescents with ADHD, autism spectrum disorder (ASD), learning disabilities, and behavioural challenges, providing individual and group therapy using evidence-based approaches such as CBT and DBT. Dr. Winslow has developed and implemented personalised treatment plans, conducted formal and informal assessments, and delivered crisis intervention for clients in need of urgent mental health care. Her expertise spans assessment, treatment planning, and behavioural intervention for both neurodevelopmental and mental health conditions.

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.

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

Dr. Rebecca Fernandez, MBBS

Reviewer

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 reviewer's privacy.