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What does having ADHD and autism look like?
Conversations around ADHD and autism have become more common as awareness of neurodevelopmental conditions continues to grow. Families often notice traits that seem to overlap, such as difficulty with focus, emotional regulation, or social interaction, and wonder whether these challenges point to autism, ADHD, or both.
This question is valid, and science now confirms that ADHD and autism can and often do coexist. For many years, diagnostic guidelines discouraged diagnosing both conditions in the same individual. As a result, countless children and adults received only partial explanations for their experiences.
Today, research and clinical practice recognize that autism and ADHD frequently occur together, shaping how a person thinks, learns, communicates, and responds to the world.
Understanding ADHD and autism helps families, caregivers, and educators respond with greater clarity and compassion. Rather than seeing overlapping traits as confusing or contradictory, we can view them as part of a broader neurodevelopmental profile that deserves individualized support.
This blog by ABA Centers of Delaware explores what ADHD is, what autism is, why they often coexist, the similarities and differences between ADHD and autism, and how ABA therapy supports individuals with autism.
What Is ADHD?
Attention-Deficit Hyperactivity Disorder, commonly known as ADHD, is a neurodevelopmental condition that affects attention, impulse control, activity level, and executive functioning. According to the CDC, nearly 15.5 million adults in the United States have an ADHD diagnosis. ADHD typically emerges in childhood, although many individuals receive a diagnosis later in life when academic, social, or workplace demands increase.
ADHD presents in different ways. Some individuals primarily struggle with inattention, such as difficulty sustaining focus, organizing tasks, or following through on instructions.
Others experience hyperactivity and impulsivity, which may include constant movement, interrupting conversations, or acting without considering consequences. Many individuals show a combination of both patterns.
Living with ADHD often means working harder to manage time, regulate emotions, and maintain focus, even when motivation is high. These challenges do not reflect a lack of intelligence or effort. They reflect differences in how the brain regulates attention and behavior.
What Is Autism?
Autism Spectrum Disorder is also a neurodevelopmental condition. Autism affects
- Communication
- Social interaction
- Sensory processing
- Behavior patterns
It appears early in development and remains part of a person’s life, although skills, needs, and challenges can change over time.
Autism exists on a spectrum, meaning it presents differently in each individual. Some people communicate verbally with ease, while others rely on alternative communication methods. Some seek routine and predictability, while others engage deeply in specific interests. Sensory experiences often play a significant role, with heightened or reduced sensitivity to sound, light, texture, or movement.
When discussing autism and ADHD together, it is essential to remember that neither condition defines a person entirely. Each individual brings strengths, preferences, and potential that extend beyond diagnostic labels.
Why ADHD and Autism Often Coexist
For many years, professionals treated ADHD and autism as separate and mutually exclusive diagnoses. In fact, until 2013, diagnostic guidelines discouraged clinicians from diagnosing both conditions in the same individual. This separation left many children and families without a complete explanation for their experiences, especially when traits did not fit neatly into one category.
Current research paints a very different picture. A study by Frontiers in Psychiatry indicates that nearly 50% to 70% of individuals on the autism spectrum also meet diagnostic criteria for ADHD, while a notable portion of individuals with ADHD (20% to 50%) display traits associated with autism. This overlap does not suggest that the two conditions are identical. Instead, it reflects how closely connected they can be in brain development and behavior.
Researchers believe this co-occurrence happens because both conditions involve differences in how the brain develops and organizes itself over time. Areas related to attention regulation, impulse control, emotional processing, and sensory integration function differently in individuals with ADHD and autism. These shared neurological features help explain why traits such as distractibility, emotional intensity, difficulty with transitions, and sensory sensitivities can appear in both conditions.
Genetics also plays a significant role. Family and twin studies suggest that ADHD and autism share genetic risk factors and indicate that individuals with ADHD, as well as their siblings, often show higher levels of autism-related traits compared to the general population.
Rather than viewing ADHD and autism as separate boxes, clinicians now approach them as conditions that can intersect in complex and meaningful ways. This shift in understanding allows for more accurate evaluations, reduces missed diagnoses, and supports more personalized intervention strategies that address the full range of an individual’s needs.
Similarities Between ADHD and Autism
Understanding similarities helps explain why ADHD and autism sometimes look alike, especially in children.
Both conditions may involve:
- Difficulty sustaining attention
- Challenges with emotional regulation
- Impulsivity or difficulty waiting
- Sensory sensitivities
- Trouble with transitions
- Executive functioning challenges, such as planning and organization
A child with either condition may appear distracted, overwhelmed, or reactive in busy environments. They may struggle with classroom expectations or social interactions, especially when demands exceed their coping skills.
7 Differences Between ADHD and Autism
Although ADHD and autism share some overlapping traits, the reasons behind certain behaviors often differ. Understanding these differences helps families recognize what kind of support may be most helpful.
1. Social Understanding
Individuals with autism often find social cues confusing or unclear. They may struggle to read facial expressions, tone of voice, or body language. Individuals with ADHD usually understand social cues but may act impulsively, interrupt others, or miss cues because their attention shifts quickly.
2. Attention Style
ADHD commonly involves difficulty sustaining attention across tasks, especially those that feel repetitive or unstimulating. Autism often includes deep, sustained focus on specific interests, sometimes for long periods, which can make shifting attention challenging.
3. Response to Routine and Change
Many individuals with autism feel more comfortable with structure and predictability. Unexpected changes can cause stress or emotional discomfort. Individuals with ADHD often seek novelty and stimulation, though they may struggle to manage change effectively.
4. Sensory Processing
Sensory sensitivities play a central role in autism and can strongly influence daily functioning. Sounds, lights, textures, or smells may feel overwhelming. While individuals with ADHD can experience sensory challenges, these tend to be less consistent or less intense overall.
5. Communication Patterns
People with autism may communicate in more literal or direct ways and may need explicit guidance for social conversation. Individuals with ADHD often communicate easily but may talk excessively, jump between topics, or struggle to listen due to impulsivity.
6. Emotional Regulation
Emotional responses in autism often relate to sensory overload or difficulty interpreting situations. In ADHD, emotional reactions may appear sudden or intense due to challenges with impulse control and frustration tolerance.
7. Social Motivation
Individuals with autism may prefer limited or structured social interaction and need time to feel comfortable engaging. Individuals with ADHD are often socially motivated and eager to interact, even when their behavior becomes overwhelming for others.
How ABA Therapy Supports Individuals with Autism
Even though ABA therapy focuses on autism and does not treat ADHD or other co-occurring conditions, ABA plays a critical role in helping individuals with autism navigate daily challenges, even when ADHD traits are present.
ABA supports individuals by:
- Teaching functional communication skills
- Building positive behaviors that support learning
- Strengthening emotional regulation and coping mechanisms
- Improving tolerance for transitions and change
- Supporting independence in daily routines
- Reducing behaviors that interfere with safety or learning
ABA therapy emphasizes skill-building rather than symptom elimination. Therapists work closely with individuals to identify triggers, teach coping strategies, and reinforce behaviors that improve quality of life.
When autism and ADHD coexist, ABA helps the individual manage the autism-related aspects of their experience, which often reduces overall stress and improves daily functioning.
ABA Centers of Delaware Supports Families in Delaware
Every family’s journey with autism is unique, and at ABA Centers of Delaware, we walk this path with you. We offer compassionate, personalized ABA therapy that empowers individuals with autism to thrive at home, at school, and in their communities.
Our services include:
- Customized ABA treatment plans tailored to each child’s strengths and goals
- Support that honors every individual’s ability and need
- Ongoing family collaboration, education, and support
- Tools and strategies to help children and families navigate autism with confidence
- Skill-building for long-term independence and success
We are proud to serve families throughout Delaware, with convenient center-based services in New Castle.
Ready to learn how we can support your family? Call us today at (844) 855-8517 or contact us to schedule a consultation. Together, we can help your loved one build skills for a brighter future.
