Can Autism Cause OCD?: Evolving Perspectives

Unravel the complexities of the relationship between autism and OCD. Learn about their similarities, differences, and how these conditions can co-occur, without one directly causing the other.

steven zauderer
Steven Zauderer
December 13, 2023
min read

Understanding Autism and OCD

To comprehend the relationship between autism and obsessive-compulsive disorder (OCD), it is essential to have a clear understanding of each condition. This section will provide an overview of autism, OCD, and the relationship between the two.

What is Autism?

Autism, also known as Autism Spectrum Disorder (ASD), is a neurodevelopmental disorder characterized by challenges in social interaction, communication difficulties, and restricted or repetitive patterns of behavior. Individuals with autism may exhibit a wide range of symptoms and abilities, as autism is a spectrum disorder. This means that the severity and manifestation of symptoms can vary greatly from person to person.

What is OCD?

Obsessive-compulsive disorder (OCD) is a mental health condition characterized by intrusive, unwanted thoughts (obsessions) and repetitive behaviors or rituals (compulsions). These obsessions and compulsions can significantly interfere with daily life, causing distress and impairing functioning.

Common obsessions include fears of contamination, a need for symmetry, or intrusive thoughts of harm. Compulsions often involve repetitive behaviors, such as excessive handwashing, checking, or counting, aimed at reducing anxiety or preventing a feared event.

The Relationship Between Autism and OCD

Research suggests a higher prevalence of OCD in individuals with autism compared to the general population. While the exact nature of the relationship between autism and OCD is still being studied, there are several theories that seek to explain this connection. Some hypotheses propose shared underlying genetic factors, neurobiological abnormalities, or overlapping cognitive and behavioral features.

Not all individuals with autism will develop OCD, and not all individuals with OCD have autism. However, the co-occurrence of these conditions is more common than expected by chance alone.

Understanding the complexities of autism and OCD is crucial for accurate diagnosis and effective treatment. For individuals who may be experiencing symptoms of both autism and OCD, it is important to consult with a qualified healthcare professional for proper assessment and guidance. A thorough evaluation can lead to appropriate interventions and support tailored to the individual's unique needs.

Can Autism Trigger OCD?

While both autism and OCD (obsessive-compulsive disorder) are distinct conditions, there is evidence to suggest a possible relationship between the two. Researchers have been studying the connection between autism and OCD to better understand the co-occurrence and shared characteristics. Let's explore the research and studies conducted in this area and the link between autism and OCD symptoms.

Research and Studies

Several research studies have been conducted to investigate the relationship between autism and OCD. These studies have provided valuable insights into the potential overlap and coexistence of these conditions. Researchers have examined the prevalence of OCD symptoms in individuals with autism and vice versa to determine whether there is a higher likelihood of co-occurrence than would be expected by chance.

One study published in the Journal of Autism and Developmental Disorders found that individuals with autism are at a higher risk of developing OCD symptoms compared to the general population. The study suggested that up to 30% of individuals with autism may experience symptoms of OCD. This research highlights the importance of recognizing and addressing potential OCD symptoms in individuals with autism.

The Link Between Autism and OCD Symptoms

Autism and OCD share certain features and behaviors, which may contribute to their co-occurrence. Some individuals with autism may exhibit repetitive behaviors and rigid routines, which are also characteristic of OCD. Additionally, sensory sensitivities and difficulties with transitions, commonly observed in autism, can overlap with OCD symptoms.

While the precise mechanisms underlying the relationship between autism and OCD are still being investigated, it is believed that shared genetic and neurobiological factors may contribute to their co-occurrence. Further research is needed to better understand these complex interactions.

Understanding the link between autism and OCD symptoms is crucial in providing appropriate support and interventions for individuals with both conditions. If you suspect that you or someone you care for may have co-occurring autism and OCD, it is important to consult with a healthcare professional or specialist for an accurate diagnosis and personalized treatment plan.

In the following sections, we will explore the shared features and overlapping behaviors between autism and OCD, as well as the co-occurring conditions and comorbidities associated with these conditions. Together, this knowledge can contribute to a better understanding of the complexities of autism and OCD and inform effective treatment and support strategies.

Shared Features and Overlapping Behaviors

When exploring the relationship between autism and OCD, it becomes evident that there are shared features and overlapping behaviors between the two conditions. Understanding these commonalities can provide valuable insights into the connection between autism and OCD.

Repetitive Behaviors and Routines

Both individuals with autism and those with OCD often exhibit repetitive behaviors and routines. These repetitive behaviors can manifest in various ways, such as repetitive hand movements, rocking back and forth, or a rigid adherence to specific daily routines.

In autism, these repetitive behaviors are often associated with sensory self-stimulation or a need for predictability and sameness. For individuals with OCD, repetitive behaviors typically arise from an overwhelming urge to alleviate anxiety or to prevent a feared consequence. While the underlying motivations may differ, the presence of repetitive behaviors is a common thread between autism and OCD.

Sensory Sensitivities

Another shared feature between autism and OCD is sensory sensitivities. Individuals with both conditions may experience heightened sensitivity to certain sensory stimuli, such as loud noises, bright lights, or certain textures. These sensitivities can lead to discomfort, anxiety, or avoidance behaviors.

For individuals with autism, sensory sensitivities are a core feature of the condition and can significantly impact daily life. In OCD, sensory sensitivities may be associated with specific obsessions or compulsions. For example, someone with OCD may feel compelled to wash their hands excessively due to an intense fear of contamination. Understanding and managing sensory sensitivities is essential in supporting individuals with both autism and OCD.

Anxiety and Obsessions

Anxiety and obsessions are prevalent in both autism and OCD. Individuals with autism often experience higher levels of anxiety due to challenges with communication, social interactions, and sensory sensitivities. Similarly, individuals with OCD experience persistent and distressing thoughts, known as obsessions, which lead to heightened anxiety and the need to perform repetitive behaviors or mental rituals, known as compulsions.

While the nature of anxiety and obsessions may differ between autism and OCD, the presence of both is significant. Not all individuals with autism develop OCD, and not all individuals with OCD have autism. However, the co-occurrence of these two conditions is relatively common, and understanding the shared features can inform diagnosis and treatment approaches.

By recognizing the shared features and overlapping behaviors between autism and OCD, individuals with both conditions and their caregivers can seek appropriate support and interventions. Collaborative care, involving professionals who specialize in both autism and OCD, can provide comprehensive treatment strategies tailored to the unique needs of each individual.

Co-occurring Conditions and Comorbidities

Exploring the Complexities

Autism and OCD often present with other co-occurring conditions and comorbidities, which can further complicate the overall clinical picture. It is not uncommon for individuals with autism to experience additional challenges beyond the core symptoms of autism and OCD. Understanding these complexities is crucial for providing comprehensive care and support.

When it comes to co-occurring conditions, there is significant heterogeneity among individuals with autism and OCD. Each person may have a unique combination of conditions, and the severity and impact of these conditions can vary greatly. Some common co-occurring conditions that may be seen alongside autism and OCD include:

  • Anxiety Disorders: Anxiety disorders, such as generalized anxiety disorder, social anxiety disorder, and specific phobias, are frequently observed in individuals with autism and OCD. These conditions can exacerbate the symptoms of both autism and OCD, leading to increased distress and impairment.
  • Attention-Deficit/Hyperactivity Disorder (ADHD): ADHD is often found in conjunction with autism and OCD. The core symptoms of ADHD, including inattention, hyperactivity, and impulsivity, can overlap with and influence the manifestation of symptoms related to autism and OCD.
  • Depression: Depression can co-occur with both autism and OCD. The challenges and stress associated with these conditions can contribute to the development of depressive symptoms. It is important to monitor and address any signs of depression, as it can significantly impact the individual's overall well-being.
  • Tourette Syndrome: Tourette syndrome is characterized by the presence of both motor and vocal tics. It commonly co-occurs with both autism and OCD. Individuals with autism and OCD who also have Tourette syndrome may experience a more complex symptom presentation and require tailored interventions.

Other Conditions Associated with Autism and OCD

In addition to the co-occurring conditions mentioned above, there are other conditions that have been associated with autism and OCD. These conditions may not always be present, but their occurrence alongside autism and OCD has been observed in some cases. Some of these conditions include:

  • Intellectual Disability: Intellectual disability refers to significant limitations in intellectual functioning and adaptive behavior. It can coexist with autism and OCD, further impacting the individual's overall functioning and requiring specialized support.
  • Sleep Disorders: Sleep disturbances are common in individuals with autism and OCD. Difficulties with falling asleep, staying asleep, or experiencing restful sleep can contribute to increased daytime fatigue and worsen symptoms associated with both conditions.
  • Eating Disorders: Eating disorders, such as anorexia nervosa, bulimia nervosa, or binge-eating disorder, have been observed in individuals with autism and OCD. These conditions can have a significant impact on physical and psychological well-being, requiring a comprehensive treatment approach.

Understanding the presence of these co-occurring conditions and comorbidities is essential for developing an individualized treatment plan that addresses the diverse needs of each individual.

Collaborative care involving professionals from various disciplines, such as psychiatrists, psychologists, therapists, and educators, can provide comprehensive support for individuals with autism and OCD. By recognizing and addressing these complexities, individuals can receive the necessary care to improve their quality of life.

Treatment and Support

When it comes to managing the relationship between autism and OCD, a comprehensive approach that addresses both conditions is crucial. Treatment and support options aim to alleviate symptoms, improve daily functioning, and enhance overall well-being for individuals with autism and OCD. Here are some approaches to consider:

Approaches for Managing Autism and OCD

Treating autism and OCD simultaneously requires a tailored approach that takes into account the unique needs and challenges of each individual. Some common approaches include:

  • Behavioral Therapy: Behavioral therapies, such as Applied Behavior Analysis (ABA) and Cognitive Behavioral Therapy (CBT), can be effective in addressing both autism and OCD symptoms. ABA focuses on improving social skills, communication, and behavior, while CBT helps individuals manage obsessive thoughts and compulsive behaviors.
  • Medication: In some cases, medication may be prescribed to help manage symptoms of OCD or co-occurring conditions such as anxiety or depression. It's important to consult with a healthcare professional to determine the appropriate medication and dosage for each individual's specific needs.

Therapies and Interventions

In addition to behavioral therapy, other therapeutic interventions can provide support for individuals with autism and OCD. These may include:

  • Social Skills Training: Social skills training can help individuals with autism develop and improve their social interactions, reducing social anxiety and enhancing overall well-being. This can be particularly beneficial for individuals with both autism and OCD, as social difficulties often co-occur.
  • Exposure and Response Prevention (ERP): ERP is a specialized form of CBT that focuses on gradually exposing individuals to their OCD-related fears or triggers while teaching them healthier coping mechanisms. This evidence-based approach can be effective in reducing OCD symptoms.

Collaborative Care for Individuals with Autism and OCD

Collaborative care involving a multidisciplinary team is often essential for effectively managing the complexities of autism and OCD. This team can consist of professionals such as:

  • Psychologists: Psychologists play a vital role in providing assessments, diagnosis, and evidence-based therapies for individuals with both autism and OCD. They can help tailor treatment plans to address the specific needs of each individual.
  • Psychiatrists: Psychiatrists are medical doctors who specialize in mental health and can prescribe medication when necessary. They can also provide consultation and guidance on medication management for individuals with autism and OCD.
  • Occupational Therapists: Occupational therapists can help individuals develop strategies to manage sensory sensitivities, improve fine motor skills, and enhance daily living skills. These skills can be particularly beneficial for individuals with both autism and OCD.

By combining different approaches, therapies, and a collaborative care model, individuals with autism and OCD can receive the comprehensive support they need. It's important to involve professionals who have experience in both autism and OCD to ensure the best outcomes for individuals and their families.


Autism and OCD (Obsessive-Compulsive Disorder) can sometimes co-occur, autism itself doesn't cause OCD. Both conditions have distinct characteristics, and while there may be some overlapping symptoms, they are separate diagnoses. Understanding the relationship between autism and OCD requires a closer look at each condition and their possible interactions.


steven zauderer

CEO of CrossRiverTherapy - a national ABA therapy company based in the USA.

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