Mistaken Identity: It’s Not Always ADHD
When inattention, big emotions, and disruptive behavior have a different driver — and why the right questions matter.
This is one of the most common referral patterns I see:
A child is described using three everyday concerns that show up at home and school:
- Inattention (“doesn’t listen,” “is just not focusing,” misses instructions, can’t sustain attention)
- Big emotions (tearful, worried, moody, big blow-ups, overwhelmed quickly, “it happens fast,” and often needs help “settling down” after they’re upset)
- Disruptive behavior (arguing, refusing, melting down, getting sent out, repeated behavior plans)
And very quickly, the conclusion becomes ADHD. Sometimes that is accurate — I diagnose and treat ADHD regularly, and I believe in evidence-based care. But I also want families to know something protective and practical: those same three problems can be what you’re seeing on the surface when a medical or neurological driver is being missed. When that happens, a child does not just get the wrong intervention — they can end up with the wrong identity.
In this post, I am focusing on two drivers I carefully screen for — and in doing so, I have helped many families “flip the story” more times than I can count:
- Subtle seizure activity (including seizures that can occur frequently during the day and/or during sleep).
- Sleep disorders — especially sleep-disordered breathing / obstructive sleep apnea (OSA).
Important caveat: it is absolutely possible for a child to have ADHD and a seizure disorder. It is also possible for a child to have ADHD and obstructive sleep apnea. My point is not to talk you out of ADHD. My point is that when the pattern does not fit together well, we cannot be certain until we have thoughtfully ruled these drivers in or out. And if either one is present, treating it can significantly improve a child’s functioning and adjustment — even if ADHD is still part of the picture. Then we treat what remains appropriately.
Here is the principle I want adults to hold onto (at home and at school):
- When awareness is impaired, behavior stops being a choice.
If a child is neurologically unavailable in that moment, consequences and “try harder” strategies will not fix it — and repeated misinterpretation can quietly damage confidence, learning momentum, and relationships.
Driver 1: Subtle seizures can wear an “ADHD costume.”
Most parents expect seizures to be obvious. Many are. But a large subset of pediatric seizures are subtle — and when they are subtle, they can look like “not paying attention,” “not listening,” “refusing,” or “attitude.”
Absence seizures
These are brief lapses in awareness — often a sudden blank stare or “pause.” They are commonly mistaken for daydreaming or inattentive ADHD. A practical clue is interruptibility: typical inattention is often interruptible; absence seizures typically are not.
And this is the part many people do not realize: absence seizures can occur very frequently during the day. In some children, they can happen dozens of times — and occasionally far more — which means a child can miss lots of tiny slices of instruction (and social nuance) without anyone understanding why. Then the child gets blamed for gaps they did not choose.
Focal impaired awareness seizures (formerly complex partial seizures)
These can look like confusion, nonresponse, or odd automatic behaviors (automatisms), and confused behavior that can look impulsive. From across the classroom, it can look like refusal. Clinically, it may be impaired awareness.
This is one reason I coach adults to describe what they observe (what they saw, how long it lasted, what happened right after) rather than assigning motive in the moment.
A third reality that gets missed: seizures can be happening at night
Nocturnal seizures occur during sleep and can be hard to witness directly. When sleep is disrupted by seizure activity, the next day can look like attention trouble, irritability, “brain fog,” reduced learning efficiency, and a lower threshold for big emotions — which can easily be mislabeled as ADHD or behavior.
This does not mean a child must be having night seizures. It means sleep-time physiology can change the daytime picture, and it is worth asking the question when the story is not adding up.
Driver 2: Sleep disorders can mimic ADHD — and amplify emotions.
Sleep problems can create an ADHD-like daytime picture. Poor-quality sleep does not just make kids tired. In children, sleep disruption often shows up as variable attention, restlessness, impulsivity, irritability, quick escalation, and more frequent big blow-ups.
A key point for parents: kids do not always look sleepy when sleep is poor. Some children look wired, restless, and emotionally reactive.
The sleep disorder I see missed most often in these cases is obstructive sleep apnea (OSA) / sleep-disordered breathing.
If a child is snoring, mouth breathing, sleeping restlessly, or waking up not feeling rested, that deserves a thoughtful pediatric conversation — especially when attention, emotions, and behavior concerns are on the table.
Two quick “signal questions” I ask parents (not diagnostic — just high-yield):
- “Does your child snore, sleep with their mouth open, or seem to need their head tilted back to breathe comfortably?”
- “Is your child really restless during sleep — lots of movement, tossing, turning, never fully settling?”
Why I take sleep seriously: when sleep-disordered breathing is treated, many children show meaningful improvement in daytime attention and behavior. That does not mean every child with ADHD has OSA. It means we do not skip sleep just because ADHD is a familiar label.
The uncomfortable truth: ADHD can become the default explanation.
I have seen school teams and behavioral healthcare clinicians move too fast into the ADHD narrative — usually not out of bad intent, but out of habit, time pressure, and the reality that ADHD is common.
I have lost count of how many times the story changes once we slow down and ask better questions:
- A child treated as “ADHD” when the urgent question was actually, “Are there brief episodes of impaired awareness?”
- A child treated as “defiant” when they were actually confused, foggy, or neurologically unavailable in key moments.
- A child routed toward increasingly restrictive school responses when the real need was medical clarification and a calmer, smarter plan.
A message I want parents to hear clearly.
It doesn’t always take hours of testing to get it right.
Testing can be valuable — sometimes essential. But a one-size-fits-all testing battery is not automatically best practice.
Often, the turning point is knowledge, thoroughness, a few high-yield questions, and established collaborative relationships with pediatricians and pediatric neurology.
When interns and fellows ask me, “How do you decide what to test?”, I tell them this — and I say it the same way every time:
“Until I’m certain. Every piece of information is clinical data. Tests do not make a diagnosis — they add data that help us reach the most accurate diagnosis and guide treatment. It’s similar to the way lab results inform medical decision-making. Parents know their child best. Teachers often know them well. Children communicate when they can with words, and behavior is communication too. When we put those pieces together with targeted, valid assessment and careful interpretation, we get what we’re aiming for: clinical correlation. Clinical correlation is mandated.”
This is the heart of pediatric neuropsychology: “brain–behavior relationships.” Clinical correlation is how we connect a child’s real-world learning, emotions, and behavior to the drivers underneath — and turn that into diagnostic clarity and useful recommendations.
This supports integrated collaborative care with a child’s pediatrician and specialty physicians.
Here is what I do differently when the pattern does not fit.
In my office, before I let “it’s just ADHD” harden into a plan, a few questions can often provide a wealth of information and help guide the clinical path:
- “When your child is ‘just not focusing,’ are they interruptible in the moment?” (Can you get them back with voice/touch/eye contact — or does it have to pass on its own before they are reachable again?)
- “During those moments, do you notice a dazed look or small ‘automatic’ behaviors (like lip movements or picking at clothing)?”
- “And right after — do they bounce right back, or do they seem briefly foggy, confused, tired, or irritable?”
- “How is your child sleeping overall — snoring, mouth breathing, restless sleep, or lots of tossing and turning?”
- “How are mornings — hard to wake, groggy, headaches, or not feeling rested even after a full night in bed?”
- “What is the birth and early medical story?” Not the quick version — the thorough version — because it often contains clues that change the clinical path.
What I invite parents to do this week if this resonates:
- Ask adults to document observations, not interpretations. (“What did you see? What time? How long? What happened right after?” is far more useful than “refused,” “defiant,” or “didn’t try.”)
- Track patterns at home: interruptibility during “just not focusing” moments, what happens right after, and whether symptoms cluster after poor sleep, snoring, mouth breathing, or restless nights.
- If the narrative has become “it’s just ADHD,” but the medical history and real-world observations do not fit neatly, ask for a broader differential conversation.
Closing thought
Sometimes the right answer is ADHD — and treatment can make a significant difference. But when the pattern does not add up, this is often a case of mistaken identity.
The most protective thing we can do for a child is to slow down, ask better questions, and coordinate best-practice pediatric care across specialties early — starting with your child’s pediatrician.
Bring your observations to your child’s pediatrician. If the child has been referred to me first, I often start the clinical sorting and then we can coordinate referrals early and collaboratively — pediatrics, follow up pediatric psychology/neuropsychology, pediatric neurology, sleep medicine, and, if necessary, ENT — based on what the pattern suggests.
You do not have to be certain — you just have to be thorough. That is how we get it right, and that’s how children stop being misunderstood.
As always, if I can be of assistance, please feel free to reach out.