Recognizing Obsessive–Compulsive Patterns in Neurodivergent Adults

By Tim Aiello, MA, LPC, NCC, ADHD-CCSP, ASDCS | Clinical Director | Myndset Therapeutics

Many neurodivergent adults are familiar with racing thoughts, rumination, or mental loops. ADHD and autism can both involve intense thinking patterns, deep analysis, and difficulty disengaging from certain ideas.

However, sometimes these experiences go beyond typical ADHD or autistic rumination. In some cases, intrusive thoughts and repetitive mental behaviors may reflect obsessive–compulsive patterns.

Research increasingly suggests that OCD can co-occur with ADHD and autism more frequently than previously understood (Abramovitch et al., 2015; Hollander et al., 2020). Because the symptoms can overlap, many people struggle to recognize when obsessive–compulsive processes may be part of the picture.

This article is not intended to diagnose OCD. Instead, it highlights several patterns that research and clinical literature associate with obsessive–compulsive experiences, particularly in neurodivergent adults.

1. Your Thoughts Feel Intrusive and Unwanted

One of the defining features of OCD is the presence of intrusive thoughts, often referred to as obsessions. These are thoughts, images, or impulses that appear suddenly and feel distressing or out of character.

Many people with ADHD experience rumination, but intrusive thoughts in OCD tend to feel different. They often feel uninvited, repetitive, and difficult to dismiss, even when the person recognizes the thought is irrational.

Research shows that intrusive thoughts are a core feature of OCD and are typically ego-dystonic, meaning they conflict with the person’s values or identity (Abramowitz et al., 2021).

For example, someone might experience repeated fears of harming someone, becoming ill, or having done something morally wrong, despite having no intention or desire for those things to occur.

2. You Feel Compelled to Mentally “Check” or Reassure Yourself

Another hallmark of OCD involves compulsions, which are behaviors or mental rituals performed to reduce anxiety caused by intrusive thoughts.

These compulsions are not always visible behaviors. Many people engage in mental checking, such as repeatedly reviewing memories, analyzing conversations, or searching for certainty that something bad did not happen.

For neurodivergent individuals who already tend toward deep thinking and pattern analysis, this type of mental reviewing can become especially intense.

Unfortunately, research shows that reassurance and checking behaviors tend to reinforce obsessive–compulsive cycles rather than resolve them (Abramowitz et al., 2021).

3. The Thought Loop Doesn’t Resolve Even After You “Solve” It

ADHD rumination often resolves once attention shifts or the brain receives new stimulation. In contrast, OCD-related thought loops tend to persist even after the person logically answers the question.

Someone may spend hours researching, analyzing, or seeking reassurance, yet the doubt quickly returns.

This is sometimes referred to as the “doubt cycle” of OCD. The brain continues searching for certainty even when evidence suggests the feared outcome is extremely unlikely (Pauls et al., 2014).

For many individuals, this cycle can become mentally exhausting.

4. The Thoughts Target What Matters Most to You

One of the most misunderstood aspects of OCD is that intrusive thoughts often target a person’s core values and fears.

Research shows that obsessive fears commonly revolve around themes such as:

• harming others• contamination or illness• moral wrongdoing• relationship doubts• responsibility for negative outcomes

Because these topics often reflect things people care deeply about, the thoughts can feel especially disturbing.

Importantly, the presence of these thoughts does not mean someone wants them or agrees with them. In fact, the distress they cause often reflects the opposite (Abramowitz et al., 2021).

5. The Thoughts Trigger Strong Anxiety or Urgency

Another indicator of possible OCD patterns is the intense sense of urgency that often accompanies intrusive thoughts.

The brain may create a feeling that the thought must be solved immediately. This can lead to compulsive behaviors such as researching, asking others for reassurance, mentally replaying events, or avoiding certain situations altogether.

From a neuroscience perspective, OCD involves dysregulation in brain circuits responsible for threat detection and behavioral inhibition, particularly within cortico–striato–thalamo–cortical pathways (Pauls et al., 2014).

When these systems become overactive, the brain may interpret uncertainty itself as a threat.

When to Consider Speaking With a Professional

If intrusive thoughts or compulsive behaviors are consuming significant time, causing distress, or interfering with daily functioning, it may be helpful to speak with a mental health professional who has experience with obsessive–compulsive disorders.

One of the most evidence-based treatments for OCD is Exposure and Response Prevention (ERP), a specialized form of cognitive behavioral therapy that helps individuals reduce compulsive behaviors and learn to tolerate uncertainty (Abramowitz et al., 2021).

For neurodivergent individuals, treatment may also benefit from approaches that consider sensory processing, executive functioning, and nervous system regulation.

Final Thoughts

Intrusive thoughts can be frightening and confusing, especially when they seem to come out of nowhere. For many neurodivergent adults, understanding how ADHD, autism, and OCD can interact may provide helpful clarity.

Recognizing these patterns does not mean something is “wrong” with you. Instead, it can be a first step toward understanding how the brain responds to uncertainty, responsibility, and perceived threat.

And most importantly, intrusive thoughts are far more common than many people realize.

References

Abramovitch, A., Dar, R., Mittelman, A., & Schweiger, A. (2015). Comorbidity between attention deficit/hyperactivity disorder and obsessive–compulsive disorder across the lifespan. Harvard Review of Psychiatry, 23(4), 245–262.

Abramowitz, J. S., Taylor, S., & McKay, D. (2021). Obsessive–compulsive disorder. The Lancet, 397(10285), 1426–1438.

Hollander, E., Anagnostou, E., Chaplin, W., et al. (2020). Obsessive–compulsive behaviors in autism spectrum disorders. Psychiatric Clinics of North America, 43(4), 675–688.

Pauls, D. L., Abramovitch, A., Rauch, S. L., & Geller, D. A. (2014). Obsessive–compulsive disorder: An integrative genetic and neurobiological perspective. Nature Reviews Neuroscience, 15(6), 410–424.