Why PANS Is So Often Missed (And the Overlap With ADHD, Autism and OCD)

PANS is so often missed because its symptoms map almost perfectly onto conditions practitioners already know well: ADHD, autism, OCD and anxiety. The single feature that separates it, an abrupt and dramatic onset, is the one detail that gets lost when a child's presentation is filtered through a familiar diagnostic lens. Recognition is not a matter of knowing more conditions. It is a matter of thinking differently about the ones you already see.

Key takeaways

• PANS and PANDAS are routinely missed because their symptoms overlap with ADHD, autism, OCD and anxiety, and the differentiating feature (acute onset) is easy to overlook.
• The clinical skill that matters is differential thinking: asking how a presentation began, not just what it looks like now.
• A structured framework turns recognition from a lucky catch into a repeatable process you can apply in every consultation.
• The Moore Method certification teaches practitioners to identify neuroinflammatory drivers and sequence treatment to underlying causes.

Why the overlap is so convincing

A child with PANS can present with intrusive thoughts, ritualised behaviours, separation anxiety, emotional dysregulation, restricted eating, motor tics, deteriorating handwriting and a sudden drop in school performance. Read that list in isolation and almost every item belongs to a more common label. The OCD-like rituals look like OCD. The inattention and impulsivity look like ADHD. The rigidity, sensory changes and social withdrawal look like autism. The distress and avoidance look like an anxiety disorder.

This is the trap. When a presentation matches a familiar pattern, the brain stops searching. The practitioner reaches the first diagnosis that fits and treats accordingly. The problem is that PANS is not a variant of any of those conditions. It is a neuroinflammatory process, and treating it as a behavioural or developmental diagnosis means the underlying driver is never addressed.

Keonie Moore has worked clinically with children presenting with PANS and PANDAS for more than 10 years, and the pattern she sees repeated is not a knowledge gap. Most practitioners can define PANS. What they have not been trained to do is hold it in mind as a live possibility while a more familiar diagnosis is competing for their attention. That is a thinking problem, not a content problem, and it is the foundation of the clinical excellence the Academy is built around.

The detail that changes everything: how it began

The feature that separates PANS from its lookalikes is rarely on the symptom list at all. It is the timeline.

ADHD, autism and most childhood anxiety present gradually. Traits emerge, develop and become apparent over months and years. PANS does the opposite. It arrives suddenly, often within days, frequently after an infection. A parent can typically name the week, sometimes the day, their child changed. A previously settled child becomes unrecognisable: new rituals, new fears, new rage, new eating restrictions, appearing almost overnight.

That acute onset is the single most powerful differentiator a practitioner has, and it is invisible unless you ask for it directly. A history that focuses on current symptoms will never surface it. A history that asks "when did this start, and how quickly?" surfaces it immediately. The practitioners who catch PANS are not the ones who know the most about it. They are the ones who have built the habit of interrogating onset in every paediatric presentation, especially when the picture looks like textbook ADHD, autism or OCD.

How to train your differential eye

Recognition is a trainable skill, and it follows a sequence:

• Make onset a non-negotiable history question. For any child presenting with OCD, anxiety, behavioural or developmental concerns, establish exactly how and how fast the symptoms began. Sudden, dramatic onset reframes the entire case.
• Treat overlap as a prompt, not a conclusion. When a presentation looks like a clean fit for ADHD, autism or OCD, let that very neatness trigger the question: could this be the inflammatory mimic rather than the developmental original?
• Look for the company symptoms keep. PANS rarely arrives as a single tidy complaint. The clustering of multiple new neuropsychiatric symptoms appearing together is itself a signal.
• Track change objectively. Using structured OCD and tic scales gives you a baseline and a way to measure response, which both sharpens the picture and confirms the diagnosis over time.

These habits are simple to describe and difficult to apply consistently in a busy clinic, which is precisely why a framework matters. Under pressure, practitioners default to pattern-matching. A structured approach replaces that default with a deliberate process that runs the same way every time.

Why a framework beats accumulated knowledge

Reading more about PANS makes you better informed. It does not reliably make you better at recognising it, because recognition fails at the level of clinical reasoning, not information. This is the gap the Moore Method was built to close.

The Moore Method is Keonie's own clinical framework for PANS and PANDAS. It teaches practitioners to identify the key drivers of neuroinflammation, interpret functional testing including nutrigenomics and Organic Acids Testing, and sequence treatment to address underlying causes rather than chasing symptoms. It covers barrier function across the gut barrier and blood-brain barrier, the gut-brain-immune connection and the microbiome, mitochondrial function, and the use of OCD and tic scales to track progress. The advanced work extends into subtypes such as histamine-driven and mould-driven PANS, where the recognition challenge is even sharper.

What a framework gives you is consistency. Instead of relying on whether a particular case happens to trigger your memory of PANS, you apply the same diagnostic logic to every child who walks through your door. The framework holds the differential open for you, so the abrupt-onset, infection-triggered, multi-symptom presentation does not slip past disguised as something more familiar.

That structure is reinforced through ongoing case discussion in the clinical mentoring membership, where practitioners bring real presentations and refine their reasoning against live cases. Recognition sharpens fastest when it is practised against the complexity of actual clinical work, not studied in the abstract.

The conclusion practitioners need to sit with

PANS is missed not because it is rare or obscure, but because it imitates the conditions practitioners are most confident diagnosing. The overlap with ADHD, autism and OCD is real, and it is exactly what makes a structured differential essential. The practitioners who catch what others miss are not working from more knowledge. They are working from a better process, one that treats acute onset as the question that must always be asked and never lets a familiar pattern close the door on the inflammatory cause underneath it. That process can be learned, and learning it is the difference between treating the label and treating the child.