Parents often arrive at this question after a teacher, relative, or their own gut feeling raises a concern, and then find that Autism Spectrum Disorder and ADHD share enough overlapping traits to be genuinely confusing to tell apart. This isn't a diagnostic tool, but it's a starting point for understanding what you're seeing and what to do next.
Where the two can look similar
- Difficulty sitting still or following multi-step instructions
- Trouble with transitions between activities
- Meltdowns or frustration in overstimulating environments
- Inconsistent eye contact or social engagement in some situations
Signs that lean more toward Autism Spectrum Disorder
- Strong preference for routine and distress when it's disrupted
- Repetitive movements or behaviours (hand-flapping, lining up objects, repeating phrases)
- Difficulty with back-and-forth social interaction, even when calm and attentive
- Intense, narrow interests pursued in detail
- Sensory sensitivities: to sound, texture, light, or touch
Signs that lean more toward ADHD
- Difficulty sustaining attention on tasks that aren't highly stimulating
- Impulsivity: acting before thinking, interrupting, difficulty waiting turns
- High activity levels across most settings, not just certain ones
- Social engagement is usually present and enthusiastic, even if it's poorly regulated
- Forgetfulness with everyday tasks and instructions
Why the answer is sometimes "both"
Autism and ADHD commonly co-occur. A child can have genuine sensory and social-communication differences alongside attention and impulsivity difficulties. This is exactly why a proper assessment, not a checklist, matters: it looks at the whole pattern rather than forcing a single label.
What to actually do with your concern
- Write down specific examples, what you see, how often, in which settings, rather than relying on memory during an appointment.
- Talk to your paediatrician first if you haven't already; they can rule out other causes and refer you onward.
- Get a proper developmental/behavioural assessment rather than relying on an online quiz or a single relative's opinion.
- Start support early if a concern is confirmed. Early behaviour-based support (like ABA) tends to help more the sooner it starts.
This article is educational, not diagnostic. Only a qualified assessment (by a developmental paediatrician, clinical psychologist, or psychiatrist) can confirm a diagnosis. Shital's practice offers ABA-based behaviour support once a concern or diagnosis is identified, and can help point you toward the right assessment if you don't have one yet.