Can Lyme Disease Cause Gastrointestinal Symptoms in Children?
Stomach symptoms aren’t typical—but they can occur
Often linked to autonomic nervous system involvement
Symptoms may be missed when testing appears normal
Lyme disease can cause gastrointestinal symptoms in children, particularly when the infection affects the nervous system or contributes to dysautonomia. :contentReference[oaicite:0]{index=0}
Although abdominal pain is not a classic sign, some children develop nausea, appetite changes, bloating, constipation, diarrhea, or unexplained stomach discomfort during the course of illness.
Most abdominal pain in children is not caused by Lyme disease. But in children living in tick-endemic areas—especially those with neurologic, autonomic, or multisystem symptoms—Lyme disease may need to be considered.
How Lyme Disease Can Affect the Gut
Lyme disease is often associated with rash, joint pain, or fatigue. But it can also affect the nervous system.
When this occurs, gastrointestinal symptoms may arise through autonomic dysfunction, which disrupts digestion, gastric emptying, bowel function, and appetite regulation.
In these cases, symptoms may appear gastrointestinal—even when standard GI testing is normal.
Gastrointestinal Symptoms Reported in Lyme Disease
- Abdominal discomfort or cramping
- Nausea
- Reduced appetite
- Early fullness after meals
- Bloating
- Constipation or diarrhea
- Weight changes
These symptoms are not specific to Lyme disease. However, they may occur alongside fatigue, dizziness, brain fog, palpitations, or temperature sensitivity.
Lyme-Associated Dysautonomia
In clinical practice, gastrointestinal symptoms are not uncommon in patients with Lyme disease who also have autonomic dysfunction.
Children may describe nausea, abdominal pain, or irregular bowel habits without a clear gastrointestinal diagnosis.
In these cases, symptoms often reflect impaired regulation rather than structural disease.
Families may notice that gastrointestinal symptoms improve earlier in treatment compared to fatigue or cognitive symptoms.
Can Lyme Disease Cause Abdominal Pain?
Yes—but this is uncommon.
A pediatric case report described a child whose initial symptom of Lyme neuroborreliosis was severe abdominal pain. Routine testing was unrevealing. Over time, neurologic symptoms emerged, and Lyme disease was confirmed.
This suggests abdominal pain can rarely reflect nerve involvement rather than primary gastrointestinal disease.
Rare Does Not Mean Irrelevant
Most children with abdominal pain do not have Lyme disease. And most children with Lyme disease do not present with isolated GI symptoms.
But when symptoms are persistent, unexplained, or part of a broader pattern, Lyme disease may deserve consideration.
When to Think More Broadly
Lyme disease may be worth considering when GI symptoms occur alongside:
- Fatigue or reduced stamina
- Dizziness or orthostatic symptoms
- Brain fog or school decline
- Headaches or facial palsy
- Gait or balance changes
- Tick exposure or endemic region
These patterns are often seen in pediatric Lyme disease, where symptoms may be subtle or evolving.
Why GI Symptoms Are Missed
Gastrointestinal symptoms are common in childhood and are often attributed to more typical causes such as viral illness, food intolerance, or stress.
But when symptoms persist or occur alongside neurologic or autonomic changes, a broader evaluation is important.
The Bottom Line
Lyme disease can affect the gastrointestinal system in children—most often through autonomic dysfunction rather than direct gut disease.
These symptoms are uncommon but clinically meaningful when part of a larger pattern.
When stomach symptoms occur alongside fatigue, neurologic changes, or fluctuating multisystem illness, Lyme disease should remain part of the differential.
Start here: Lyme disease symptoms guide
Related Reading
- Pediatric Lyme Disease
- Autonomic Dysfunction and Lyme Disease
- Brain Fog in Lyme Disease
- Lyme Disease Symptoms Guide
References
Savasta S, et al. Abdominal pain as first manifestation of Lyme neuroborreliosis in children. Italian Journal of Pediatrics. 2020. View study
Skogman B, et al. Lyme neuroborreliosis in children. Pediatr Infect Dis J. 2008.
Øymar K, et al. Clinical characteristics of childhood Lyme neuroborreliosis. Scand J Infect Dis. 2009.
Dr. Daniel Cameron, MD, MPH
Lyme disease clinician with over 30 years of experience and past president of ILADS.
Symptoms • Testing • Coinfections • Recovery • Pediatric • Prevention
