What Factors Lead to Autism Misdiagnosis?

PostedNovember 12, 2025

UpdatedNovember 12, 2025

ByMy Patient Advice

Author: Beatrice Holloway, MSc | Reviewed by: Dr. Rebecca Fernandez, MBBS

Understanding the key factors in autism misdiagnosis is crucial to improving diagnosis accuracy and timely support. Autism doesn’t always present in the way professionals expect, especially in girls, adults, or those masking their traits. When autism is misunderstood, individuals are often diagnosed with other conditions or overlooked altogether.

One common issue is the presence of comorbid conditions. Many autistic individuals also experience anxiety, ADHD, or sensory processing issues, which can distract from the underlying diagnosis. Another contributing factor is clinician error which is often due to limited training or assumptions based on outdated stereotypes. Even with the best intentions, professionals can miss or misinterpret signs, especially when current assessment tools don’t fully capture the varied ways autism can show up.

Traits That Are Often Misunderstood

Some behaviours are frequently confused with symptoms of other conditions, making autism harder to identify:

Avoidance of Eye Contact

This might be seen as social anxiety or shyness, but for many autistic people, it’s simply a more comfortable way to engage.

Monotone or Repetitive Speech

Speech patterns that seem unusual may be interpreted as a language delay or behavioural issue, rather than a core autism trait.

High Sensitivity to Stimuli

Being overwhelmed by noise, light, or touch may be labelled as overreacting unless the sensory basis is recognised.

A better understanding of these patterns and the context they appear in is vital to improving diagnostic outcomes.

Visit providers like Autism Detect for personal consultations.

For a deeper dive into the science, diagnosis, and full treatment landscape, read our complete guide to misdiagnosis and differential diagnosis.

Beatrice Holloway, MSc

Author

Beatrice Holloway is a clinical psychologist with a Master’s in Clinical Psychology and a BS in Applied Psychology. She specialises in CBT, psychological testing, and applied behaviour therapy, working with children with autism spectrum disorder (ASD), developmental delays, and learning disabilities, as well as adults with bipolar disorder, schizophrenia, anxiety, OCD, and substance use disorders. Holloway creates personalised treatment plans to support emotional regulation, social skills, and academic progress in children, and delivers evidence-based therapy to improve mental health and well-being across all ages.

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

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.