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What Are Red Flags That Suggest Misdiagnosis? 

PostedOctober 13, 2025
UpdatedOctober 14, 2025
ByMy Patient Advice
Author: Victoria Rowe, MSc | Reviewed by: Dr. Rebecca Fernandez, MBBS

A proper ADHD diagnosis requires a thorough assessment of the child’s behaviours, developmental history, and functioning across multiple settings. However, ADHD misdiagnosis can occur when symptoms overlap with other conditions, or when a child’s behaviour is misunderstood. Recognising the red flags of misdiagnosis is crucial in ensuring that a child receives the right support and treatment. 

Start your ADHD journey today

Warning Signs of Misdiagnosis 

Lack of Comprehensive Evaluation  

One major red flag for ADHD misdiagnosis is if the evaluation was not comprehensive. A proper diagnosis should involve more than just a questionnaire. It requires input from parents, teachers, and healthcare professionals, as well as an analysis of the child’s behaviour over time and in different environments. Without this comprehensive approach, the risk of diagnostic errors increases. 

Symptoms Only Present in One Setting 

If ADHD symptoms are only apparent in a single environment, such as at school but not at home, it may indicate that the child’s behaviour is due to external factors like school stress or environmental changes rather than a neurodevelopmental disorder. ADHD typically presents across various settings, not just one. 

Other Conditions Overlooked  

Sometimes, ADHD symptoms overlap with those of anxiety, depression, or learning disabilities. If these conditions are not properly ruled out, the child may be mistakenly diagnosed with ADHD when, in fact, their struggles are due to a different underlying issue. 

Conclusion 

Recognising red flags for ADHD misdiagnosis is essential for ensuring a child receives the right treatment. If any of these warning signs are present, it’s important to seek a second opinion and ensure that all potential factors are considered before a diagnosis is made. 

Visit providers like ADHD Certify for personal consultations to help identify and address ADHD misdiagnosis and get the right support for your child.

For a deeper dive into ADHD diagnosis and treatment, read our complete guide to Mislabelling Behavioral Issues as ADHD. 

Start your ADHD journey today
Victoria Rowe, MSc, author for my patient advice - mypatientadvice.co.uk
Victoria Rowe, MSc
Author

Victoria Rowe is a health psychologist with a Master’s in Health Psychology and a BS in Applied Psychology. She has experience as a school psychologist, conducting behavioural assessments, developing individualized education plans (IEPs), and supporting children’s mental health. Dr. Rowe has contributed to peer-reviewed research on mental health, including studies on anxiety disorders and the impact of COVID-19 on healthcare systems. Skilled in SPSS, Minitab, and academic writing, she is committed to advancing psychological knowledge and promoting well-being through evidence-based practice.

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.