Pediatric Lyme Disease: Why Children Are Frequently Misdiagnosed

Pediatric Lyme disease misdiagnosis occurs because the illness rarely looks like the textbook descriptions clinicians learn in medical school. While adults often present with fatigue and joint pain, children may develop sudden behavioral changes, academic struggles, or psychiatric symptoms that are attributed to other causes.

This diagnostic blind spot means many children spend months—or even years—being treated for ADHD, anxiety, or “growing pains” when the underlying problem may be tick-borne illness.

When Academic Success Disappears Overnight

Note: Patient details have been modified to protect privacy. This case represents a composite of typical pediatric Lyme disease presentations I have observed in clinical practice.

Maya had never struggled in school. At 13, she was in advanced classes and maintained close friendships. Two weeks after a family camping trip in upstate New York, everything changed.

First came severe headaches. Then she began forgetting homework assignments. Within a month, she was crying over math problems she previously solved easily, snapping at her parents, and complaining that her knees hurt.

Her pediatrician found nothing concerning. Blood work was normal. “Probably just stress,” the doctor suggested.

A therapist considered ADHD—something that had never previously been an issue. The school recommended anxiety accommodations.

Maya’s mother kept a careful journal. She noticed what specialists had not connected: the timing. Every symptom began within two weeks of that camping trip. When reviewing photos, she noticed a faint circular rash on Maya’s back.

When she brought this to a clinician familiar with tick-borne illness, Lyme testing was ordered. Initial serology was negative, but clinical evaluation—including the rash, timeline, and symptoms—led to a diagnosis of neurologic Lyme disease.

Six months later, Maya had returned to her previous academic level. But the months of confusion and worry might have been avoided if Lyme disease had been considered earlier.

How Pediatric Lyme Disease Differs From Adult Infection

Children often present differently from adults.

Behavioral and cognitive changes dominate. A previously well-adjusted child may suddenly develop anxiety, mood swings, or academic difficulty.

Joint pain is dismissed. Migratory joint discomfort is often labeled “growing pains.”

Fatigue is misunderstood. The profound exhaustion of tick-borne illness may be mistaken for poor sleep habits.

Symptoms fluctuate. A child may appear well one week and significantly ill the next, making patterns harder to recognize.

Why Pediatric Lyme Disease Is Missed

Testing Limitations

Antibody-based testing—already imperfect in adults—may be less sensitive in children during early infection. False negative Lyme tests can occur when antibody responses have not yet developed.

Unfortunately, a negative test sometimes ends the diagnostic search even when symptoms persist.

Symptoms Are Misattributed

The overlap between Lyme disease and common childhood diagnoses creates predictable patterns:

• Academic struggles → ADHD evaluation
• Mood changes → psychiatric referral
• Joint pain → growing pains
• Fatigue → lifestyle or behavioral concerns

Each specialist sees one part of the problem. The possibility that a single infection could explain the entire pattern may never be considered.

This reflects a broader education gap in Lyme disease recognition among clinicians.

Tick Exposure Goes Unnoticed

Children frequently do not notice tick bites. Rashes may occur on the scalp or back where they go unseen. Without a clear exposure history, Lyme disease may never enter the diagnostic discussion.

Neuropsychiatric Symptoms and PANS

Some children develop abrupt psychiatric symptoms such as obsessive behaviors, anxiety, emotional outbursts, or sensory sensitivity.

PANS (Pediatric Acute-onset Neuropsychiatric Syndrome) describes this sudden cluster of symptoms. PANS has multiple possible triggers, and tick-borne infections may be one of them.

Evidence suggests Lyme disease and tick-borne co-infections can activate immune responses that affect brain function.

In my clinical experience, children who develop sudden neuropsychiatric symptoms following tick exposure sometimes improve once underlying infection is treated.

Co-Infections Add Complexity

A single tick bite can transmit multiple pathogens.

Babesia may cause air hunger and anxiety.

Bartonella can contribute to neurologic and mood symptoms.

Anaplasma may produce febrile illness that resembles viral infection.

Standard Lyme testing does not identify these infections, which can complicate diagnosis and treatment.

Early Recognition Matters

When Lyme disease is identified early, treatment is often more straightforward and recovery faster.

Academic disruption, social withdrawal, and months of uncertainty may be avoided when clinicians recognize the patterns sooner.

Although early diagnosis does not guarantee perfect outcomes, it provides the best opportunity for full recovery.

Trust Parents, Question Assumptions

Pediatric Lyme disease can look very different from adult infection. Behavioral changes, school problems, and unexplained symptoms deserve careful evaluation.

Parents often recognize subtle changes before clinicians because they observe the child across multiple environments—home, school, and social life.

That perspective has clinical value and should be taken seriously when symptoms appear suddenly or follow potential tick exposure.

Frequently Asked Questions

What are common symptoms of Lyme disease in children?

Behavioral changes, fatigue, headaches, joint pain, and academic decline are commonly reported.

Can Lyme disease cause psychiatric symptoms?

Some children develop anxiety, mood changes, or obsessive behaviors when infection affects the nervous system.

Are Lyme tests reliable in children?

Antibody tests may be negative early in infection. Clinical evaluation remains important when symptoms and exposure history suggest Lyme disease.

Can children recover fully?

Most children treated early recover well. Delayed diagnosis may lead to more prolonged symptoms but recovery is still possible.

Reference

Infectious Disease Clinics of North America. McCarthy CA, Helis JA, Daikh BE. Lyme Disease in Children. 2022.