When Sensory Issues and Anxiety Overlap: A Psychiatrist Explains What’s Really Going On

If you’re a parent whose child struggles with sensory sensitivities — loud noises, scratchy clothing, unexpected touch, crowded spaces — you’ve probably also noticed that anxiety lives very close to the surface in your child’s daily life.

And you’re not imagining the connection. In a large community sample of preschoolers, 43% of those who over-responded to sensations also had an impairing anxiety disorder.¹

What Sensory Processing Issues Actually Are

Sensory processing refers to how the nervous system receives, organizes, and responds to sensory input from the environment. When sensory processing is dysregulated, the nervous system either over-responds (hypersensitivity) or under-responds (hyposensitivity) to stimuli that most people barely notice.²

This is the territory of occupational therapists, and the interventions — sensory diets, weighted blankets, proprioceptive activities, deep pressure — are targeted at helping the nervous system build tolerance and regulation capacity. The American Academy of Pediatrics notes that research on how well sensory integration therapy works is limited and inconclusive.³

What’s less often discussed is how closely sensory over-responsivity and anxiety are linked. Youth with either one show heightened brain responses to unpleasant sensations, though researchers still find two distinct problems with partly different biology.⁴

The Neurobiological Overlap

Both sensory hypersensitivity and anxiety involve the brain’s threat-detection network, in which the amygdala plays a central role.⁵

The Amygdala’s Role

The amygdala is the brain’s alarm system. It scans the environment constantly for threats and triggers the fight-or-flight response when it detects danger — real or perceived. In brain-imaging research on youth with autism, those with sensory over-responsivity showed stronger amygdala responses to mildly unpleasant sounds and touch, and those responses did not settle down with repetition the way they did in other children.⁶ A scratchy seam on a sock or a loud unexpected sound isn’t just mildly annoying — it registers as an alarm-worthy event.

The body’s response to that alarm overlaps with the anxiety response, though not completely: in one study, sensory over-responsivity went with a bigger heart-rate response to unpleasant sensations, while anxiety went with a bigger sweat response.⁴ One leading theory is that, over time, a child learns to anticipate these sensory threats before they happen, and to avoid the places where they occur — and that anticipation becomes anxiety.⁵

In studies that follow children over time, sensory over-responsivity tends to come first and predict later anxiety, not the other way around.^1,7

Where Standard Anxiety Treatment Can Miss the Sensory Piece

Standard CBT (cognitive behavioral therapy) may not fit every child whose anxiety is tied to sensory over-responsivity. Here’s the concern:

Standard CBT for anxiety teaches different ways of thinking, behaving, and reacting (‘The noise won’t hurt me. I can handle this.’), and often includes exposure therapy, which means gradually facing what is feared.⁸ But for a child with sensory hypersensitivity, the discomfort isn’t a distorted thought — it’s a real, overwhelming physiological experience. Telling a child to ‘think differently’ about a sensation that is genuinely unbearable to their nervous system can feel invalidating and ineffective.

This is why I lean toward body-first approaches alongside thought-based work:

• Sensory integration therapy (OT)
• Somatic therapies (body-based therapies that work with the nervous system directly)
• Polyvagal-informed approaches (building vagal tone and nervous system flexibility)
• Integrative psychiatric support (nutritional, lifestyle, and when needed, pharmacological)

These approaches have much less research behind them than CBT, which is well studied and considered the “gold standard” psychotherapy for anxiety,⁸ and the evidence for sensory integration therapy is limited and inconclusive.³ CBT built around relaxation and gradual exposure has reduced anxiety in controlled trials of children with autism, and researchers have proposed combining it with sensory work.⁵

Common Presentations I See in Practice

Here are some of the most common ways sensory-anxiety overlap shows up in my practice — in both children and adults:

What an Integrative Approach Looks Like

When I work with patients who have sensory-anxiety overlap, I look at several layers simultaneously:

Nervous System Regulation

Before any cognitive work can happen, the nervous system needs to be in a state where it can actually learn. This means calming the body first, through breathing practices and movement.

Nutritional Support

A whole-body workup includes looking at diet and checking for nutrient deficiencies. Supplements are not an established treatment for anxiety, though: anxiety disorders are generally treated with psychotherapy, medication, or both, research on supplements for anxiety is preliminary, and supplements can have side effects and interact with medicines.¹⁰ Talk with your child’s doctor before starting any.

Collaboration With the OT Team

I consider occupational therapists to be essential partners in treating sensory-anxiety overlap. The sensory integration work they do — building nervous system tolerance from the bottom up — is something psychiatric medication cannot replicate. The most effective outcomes I see are in patients who are doing both: sensory-based OT work and integrative psychiatric support in parallel. The American Academy of Pediatrics considers sensory-based occupational therapy acceptable as one part of a wider treatment plan, while noting that research on its effectiveness is limited.³

Trauma-Informed Care

Trauma and sensory difficulties can go together: research on children who have been through trauma, though still scarce, finds sensory modulation problems among them.¹¹ An integrative psychiatrist trained in trauma-informed care can hold this dimension without defaulting immediately to medication.

→ Learn about Dr. Lewis’s integrative approach to anxiety

→ Explore the BLISS Protocol for integrative mental wellness

What Parents and Caregivers Can Do Today

If you recognize your child — or yourself — in any of this, here are three immediate steps:

Sensory issues and anxiety: final thoughts

Sensory issues and anxiety are closely linked, even though research treats them as distinct problems. Both involve a nervous system that is working too hard, reacting too fast, and struggling to find its way back to calm.⁴

The good news: the nervous system is plastic. It can learn, adapt, and regulate — with the right support, the right team, and enough time. You’re not fighting biology. You’re working with it.