Could autism spectrum disorder cause similar issues?

PostedOctober 17, 2025

UpdatedOctober 18, 2025

ByMy Patient Advice

Author: Avery Lombardi, MSc | Reviewed by: Dr. Rebecca Fernandez, MBBS

Yes, autism spectrum disorder (ASD) can present with many of the same challenges as ADHD, particularly when it comes to attention difficulties, zoning out, and problems with memory or planning. The autism ADHD overlap is well-documented, and many people receive diagnoses of both conditions, often because they share core features such as executive function challenges and sensory sensitivity.

While ADHD is primarily about difficulty regulating attention, impulsivity, and hyperactivity, autism centres more around differences in social communication, repetitive behaviours, and sensory processing. However, both can lead to inattentiveness, disorganisation, and what appears to be “spacing out.”

How autism overlaps with ADHD symptoms

Here’s how the autism ADHD overlap can cause similar day-to-day challenges:

Executive function difficulties

Both conditions can make it hard to plan, prioritise, and follow through on tasks leading to forgetfulness, missed steps, or feeling mentally overloaded.

Sensory overload and shutdowns

In autism, zoning out may stem from sensory overwhelm or emotional overload, not just boredom or distraction as with ADHD. These shutdowns can look like inattention but have a different root cause.

Attention challenges

Autistic individuals may hyperfocus on certain topics or struggle to filter out background noise much like those with ADHD, though the pattern and context may differ.

Social differences

Zoning out during conversations may be due to different processing speeds or social communication styles, not necessarily a lack of attention.

In conclusion, if you suspect your symptoms could relate to autism, ADHD, or both, getting a full neurodevelopmental assessment can help.

Visit providers like ADHD Certify for personal consultations and expert guidance tailored to your unique situation.

For a deeper dive into the science, diagnosis, and full treatment landscape, read our complete guide to Zoning out & Forgetfulness in ADHD.

Avery Lombardi, MSc

Author

Avery Lombardi is a clinical psychologist with a Master’s in Clinical Psychology and a Bachelor’s in Psychology. She has professional experience in psychological assessment, evidence-based therapy, and research, working with both child and adult populations. Avery has provided clinical services in hospital, educational, and community settings, delivering interventions such as CBT, DBT, and tailored treatment plans for conditions including anxiety, depression, and developmental disorders. She has also contributed to research on self-stigma, self-esteem, and medication adherence in psychotic patients, and has created educational content on ADHD, treatment options, and daily coping strategies.

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.