Can Lyme Disease Cause Gastrointestinal Symptoms in Children?

Lyme disease can cause gastrointestinal symptoms in children, particularly when the infection affects the nervous system or contributes to dysautonomia. Although abdominal pain is not the most recognized sign of Lyme disease, some children develop nausea, appetite changes, abdominal discomfort, bloating, constipation, diarrhea, or unexplained stomach pain during the course of illness.

Most abdominal pain in children is not caused by Lyme disease. Common gastrointestinal conditions should always be considered first. But in children living in tick-endemic areas — especially those with neurologic, autonomic, cognitive, or multisystem symptoms — Lyme disease may enter the differential diagnosis.

How Lyme Disease Can Affect the Gut

Lyme disease is usually thought of as causing rash, joint pain, facial palsy, or fatigue. But the infection can also affect the nervous system. When that happens, gastrointestinal symptoms may occur indirectly through autonomic nervous system dysfunction or, more rarely, through radicular nerve involvement.

The autonomic nervous system helps regulate digestion, including gastric emptying, intestinal movement, bowel function, and appetite. When Lyme disease contributes to dysautonomia, children may develop symptoms that seem gastrointestinal even when routine GI testing is unrevealing.

Gastrointestinal Symptoms Reported in Lyme Disease

Children and adolescents with Lyme disease may report:

• Abdominal discomfort or cramping
• Nausea
• Reduced appetite
• Early fullness after meals
• Bloating
• Constipation or diarrhea
• Weight change related to poor intake or dysregulation

These symptoms are not specific to Lyme disease. However, they can appear as part of a broader symptom pattern that includes fatigue, dizziness, brain fog, palpitations, temperature intolerance, or sensory sensitivity.

Lyme-Associated Dysautonomia and GI Symptoms

In my clinical practice, gastrointestinal symptoms are not unusual in patients with Lyme disease who also have dysautonomia. Children and adults may describe stomach pain, nausea, irregular bowel habits, appetite changes, or feeling unwell after meals without a clear primary gastrointestinal explanation.

In these cases, the symptoms may reflect impaired autonomic regulation rather than a structural gastrointestinal disease. This is one reason GI symptoms can be confusing and are sometimes initially evaluated outside the broader context of Lyme disease.

In my experience, gastrointestinal symptoms are often among the earlier symptoms to improve during treatment. Families sometimes notice that stomach-related symptoms settle before fatigue, cognitive symptoms, or neurologic complaints have fully resolved.

Can Lyme Disease Cause Abdominal Pain in Children?

Yes — although it is uncommon, abdominal pain may occasionally be an early sign of Lyme neuroborreliosis.

A case report published in the Italian Journal of Pediatrics described a 9-year-old boy whose first major symptom of Lyme neuroborreliosis was severe abdominal pain. Routine gastrointestinal testing was unrevealing. Over time, he developed attention difficulties, irritability, speech difficulty, and ataxic gait. Further neurologic workup eventually confirmed Lyme neuroborreliosis, and he improved after treatment.

This report is important because it shows that abdominal pain can rarely reflect radicular nerve involvement rather than a primary gastrointestinal disorder.

Rare Does Not Mean Irrelevant

The pediatric abdominal pain case should not be overinterpreted. Most children with stomach pain do not have Lyme disease, and most children with Lyme disease do not present with isolated abdominal pain.

Still, the case is a useful reminder that Lyme disease can occasionally present in unexpected ways. Pediatricians and parents may need to think more broadly when abdominal pain remains unexplained and is accompanied by neurologic, autonomic, cognitive, or behavioral changes.

When to Think More Broadly

Lyme disease may deserve consideration when gastrointestinal symptoms occur alongside:

• Fatigue or reduced stamina
• Dizziness or orthostatic symptoms
• Brain fog or school decline
• Headaches or facial palsy
• Gait change, imbalance, or neurologic findings
• Tick exposure or residence in an endemic area
• A fluctuating multisystem illness without a unifying diagnosis

These patterns are especially important in the broader setting of pediatric Lyme disease, where symptoms may be subtle, variable, or initially misattributed.

Why GI Symptoms Are Sometimes Missed

Because gastrointestinal symptoms are common in childhood, they are often attributed to viral illness, stress, food intolerance, constipation, reflux, or functional abdominal pain. Those explanations are often correct. But when symptoms persist, shift, or occur alongside neurologic or autonomic complaints, a broader review of systems becomes important.

This is particularly true when routine testing is normal but the child is clearly not functioning well.

Clinical Perspective

Rare pediatric case reports describe abdominal pain as an initial manifestation of Lyme neuroborreliosis. In everyday practice, however, gastrointestinal symptoms are more often part of a broader autonomic and multisystem presentation rather than a pure radicular syndrome.

That distinction matters. It allows clinicians to recognize that GI symptoms may occur in Lyme disease without overstating how often abdominal pain reflects direct nerve-root inflammation.

The Bottom Line

Lyme disease can cause gastrointestinal symptoms in children, especially when autonomic dysfunction or neurologic involvement affects gut regulation.

Most abdominal pain in children has more common explanations. But Lyme disease may deserve consideration when GI symptoms occur as part of a larger pattern that includes fatigue, dysautonomia, cognitive change, neurologic symptoms, or exposure risk in an endemic region.

Careful clinical evaluation remains essential. In some children, stomach symptoms may be one of the earlier clues that the illness is broader than it first appears.

Related Reading

• Pediatric Lyme Disease
• Autonomic Dysfunction and Lyme Disease
• Brain Fog in Lyme Disease
• Lyme Disease Symptoms Guide

References

Savasta S, Fiorito I, Foiadelli T, Pichiecchio A, Cambieri P, Mariani B, Marone P, Marseglia G. Abdominal pain as first manifestation of Lyme neuroborreliosis in children, case report and review of literature. Italian Journal of Pediatrics. 2020;46:172. https://doi.org/10.1186/s13052-020-00936-y

Skogman B, Croner S, Nordwall M, Eknefelt M, Ernerudh J, Forsberg P. Lyme neuroborreliosis in children: a prospective study of clinical features, prognosis, and outcome. Pediatric Infectious Disease Journal. 2008;27(12):1089-1094.

Øymar K, Tveitnes D. Clinical characteristics of childhood Lyme neuroborreliosis in an endemic area of northern Europe. Scandinavian Journal of Infectious Diseases. 2009;41(2):88-94.